diff --git a/src/main/java/cc/ryanc/halo/model/entity/Option.java b/src/main/java/cc/ryanc/halo/model/entity/Option.java
index 29f2d550f..800de1788 100644
--- a/src/main/java/cc/ryanc/halo/model/entity/Option.java
+++ b/src/main/java/cc/ryanc/halo/model/entity/Option.java
@@ -1,13 +1,14 @@
 package cc.ryanc.halo.model.entity;
 
+import cc.ryanc.halo.model.enums.OptionSource;
 import lombok.Data;
 import lombok.EqualsAndHashCode;
+import lombok.NoArgsConstructor;
 import lombok.ToString;
 import org.hibernate.annotations.SQLDelete;
 import org.hibernate.annotations.Where;
 
 import javax.persistence.*;
-import lombok.NoArgsConstructor;
 
 /**
  * Setting entity.
@@ -43,8 +44,8 @@ public class Option extends BaseEntity {
     /**
      * source,default is system
      */
-    @Column(name = "option_source", columnDefinition = "varchar(127) default 'system'")
-    private String optionSource;
+    @Column(name = "option_source", columnDefinition = "int default 0")
+    private OptionSource source;
 
     public Option(String optionKey, String optionValue) {
         this.optionKey = optionKey;
@@ -55,6 +56,9 @@ public class Option extends BaseEntity {
     public void prePersist() {
         super.prePersist();
         id = null;
-        optionSource = "system";
+
+        if (source == null) {
+            source = OptionSource.SYSTEM;
+        }
     }
 }
diff --git a/src/main/java/cc/ryanc/halo/model/enums/OptionSource.java b/src/main/java/cc/ryanc/halo/model/enums/OptionSource.java
new file mode 100644
index 000000000..81314eeb1
--- /dev/null
+++ b/src/main/java/cc/ryanc/halo/model/enums/OptionSource.java
@@ -0,0 +1,23 @@
+package cc.ryanc.halo.model.enums;
+
+/**
+ * Option source.
+ *
+ * @author johnniang
+ * @date 4/1/19
+ */
+public enum OptionSource implements ValueEnum<Integer> {
+
+    SYSTEM(0),
+    THEME(1);
+
+    private final int value;
+
+    OptionSource(int value) {
+        this.value = value;
+    }
+
+    @Override
+    public Integer getValue() {
+        return null;
+    }}
diff --git a/src/main/java/cc/ryanc/halo/model/enums/converter/OptionSourceConverter.java b/src/main/java/cc/ryanc/halo/model/enums/converter/OptionSourceConverter.java
new file mode 100644
index 000000000..47061121f
--- /dev/null
+++ b/src/main/java/cc/ryanc/halo/model/enums/converter/OptionSourceConverter.java
@@ -0,0 +1,19 @@
+package cc.ryanc.halo.model.enums.converter;
+
+import cc.ryanc.halo.model.enums.OptionSource;
+
+import javax.persistence.Converter;
+
+/**
+ * OptionSource converter.
+ *
+ * @author johnniang
+ * @date 4/1/19
+ */
+@Converter(autoApply = true)
+public class OptionSourceConverter extends AbstractConverter<OptionSource, Integer> {
+
+    public OptionSourceConverter() {
+        super(OptionSource.class);
+    }
+}
diff --git a/src/main/java/cc/ryanc/halo/service/OptionService.java b/src/main/java/cc/ryanc/halo/service/OptionService.java
index e76174b01..7d419e63a 100755
--- a/src/main/java/cc/ryanc/halo/service/OptionService.java
+++ b/src/main/java/cc/ryanc/halo/service/OptionService.java
@@ -3,6 +3,7 @@ package cc.ryanc.halo.service;
 import cc.ryanc.halo.exception.MissingPropertyException;
 import cc.ryanc.halo.model.dto.OptionOutputDTO;
 import cc.ryanc.halo.model.entity.Option;
+import cc.ryanc.halo.model.enums.OptionSource;
 import cc.ryanc.halo.model.enums.PropertyEnum;
 import cc.ryanc.halo.model.enums.ValueEnum;
 import cc.ryanc.halo.model.params.OptionParam;
@@ -36,7 +37,7 @@ public interface OptionService extends CrudService<Option, Integer> {
      * @param value  value
      * @param source source
      */
-    void save(@NonNull String key, String value, String source);
+    void save(@NonNull String key, String value, @NonNull OptionSource source);
 
     /**
      * Save multiple options
@@ -44,7 +45,7 @@ public interface OptionService extends CrudService<Option, Integer> {
      * @param options options
      * @param source  source
      */
-    void save(@NonNull Map<String, String> options, String source);
+    void save(@NonNull Map<String, String> options, @NonNull OptionSource source);
 
     /**
      * SAve multiple options
@@ -52,7 +53,7 @@ public interface OptionService extends CrudService<Option, Integer> {
      * @param optionParams option params
      * @param source       source
      */
-    void save(List<OptionParam> optionParams, String source);
+    void save(List<OptionParam> optionParams, @NonNull OptionSource source);
 
     /**
      * Saves blog properties.
@@ -60,7 +61,7 @@ public interface OptionService extends CrudService<Option, Integer> {
      * @param properties blog properties
      * @param source     source
      */
-    void saveProperties(@NonNull Map<? extends PropertyEnum, String> properties, String source);
+    void saveProperties(@NonNull Map<? extends PropertyEnum, String> properties, @NonNull OptionSource source);
 
     /**
      * Get all options
diff --git a/src/main/java/cc/ryanc/halo/service/impl/OptionServiceImpl.java b/src/main/java/cc/ryanc/halo/service/impl/OptionServiceImpl.java
index 705a00e2a..6b1227161 100644
--- a/src/main/java/cc/ryanc/halo/service/impl/OptionServiceImpl.java
+++ b/src/main/java/cc/ryanc/halo/service/impl/OptionServiceImpl.java
@@ -3,10 +3,7 @@ package cc.ryanc.halo.service.impl;
 import cc.ryanc.halo.exception.MissingPropertyException;
 import cc.ryanc.halo.model.dto.OptionOutputDTO;
 import cc.ryanc.halo.model.entity.Option;
-import cc.ryanc.halo.model.enums.BlogProperties;
-import cc.ryanc.halo.model.enums.PropertyEnum;
-import cc.ryanc.halo.model.enums.QnYunProperties;
-import cc.ryanc.halo.model.enums.ValueEnum;
+import cc.ryanc.halo.model.enums.*;
 import cc.ryanc.halo.model.params.OptionParam;
 import cc.ryanc.halo.repository.OptionRepository;
 import cc.ryanc.halo.service.OptionService;
@@ -50,7 +47,7 @@ public class OptionServiceImpl extends AbstractCrudService<Option, Integer> impl
      * @param source source
      */
     @Override
-    public void save(String key, String value, String source) {
+    public void save(String key, String value, OptionSource source) {
         Assert.hasText(key, "Option key must not be blank");
 
         if (StringUtils.isBlank(value)) {
@@ -68,7 +65,7 @@ public class OptionServiceImpl extends AbstractCrudService<Option, Integer> impl
             Option anOption = new Option();
             anOption.setOptionKey(key);
             anOption.setOptionValue(value);
-            anOption.setOptionSource(source);
+            anOption.setSource(source);
             return anOption;
         });
 
@@ -83,7 +80,7 @@ public class OptionServiceImpl extends AbstractCrudService<Option, Integer> impl
      * @param source  source
      */
     @Override
-    public void save(Map<String, String> options, String source) {
+    public void save(Map<String, String> options, OptionSource source) {
         if (CollectionUtils.isEmpty(options)) {
             return;
         }
@@ -92,7 +89,7 @@ public class OptionServiceImpl extends AbstractCrudService<Option, Integer> impl
     }
 
     @Override
-    public void save(List<OptionParam> optionParams, String source) {
+    public void save(List<OptionParam> optionParams, OptionSource source) {
         if (CollectionUtils.isEmpty(optionParams)) {
             return;
         }
@@ -102,7 +99,7 @@ public class OptionServiceImpl extends AbstractCrudService<Option, Integer> impl
     }
 
     @Override
-    public void saveProperties(Map<? extends PropertyEnum, String> properties, String source) {
+    public void saveProperties(Map<? extends PropertyEnum, String> properties, OptionSource source) {
         if (CollectionUtils.isEmpty(properties)) {
             return;
         }
diff --git a/src/main/java/cc/ryanc/halo/web/controller/admin/api/OptionController.java b/src/main/java/cc/ryanc/halo/web/controller/admin/api/OptionController.java
index fd702d183..8ed06b2d3 100644
--- a/src/main/java/cc/ryanc/halo/web/controller/admin/api/OptionController.java
+++ b/src/main/java/cc/ryanc/halo/web/controller/admin/api/OptionController.java
@@ -1,6 +1,7 @@
 package cc.ryanc.halo.web.controller.admin.api;
 
 import cc.ryanc.halo.model.dto.OptionOutputDTO;
+import cc.ryanc.halo.model.enums.OptionSource;
 import cc.ryanc.halo.model.params.OptionParam;
 import cc.ryanc.halo.service.OptionService;
 import io.swagger.annotations.ApiOperation;
@@ -33,7 +34,7 @@ public class OptionController {
 
     @PostMapping("saving")
     public void saveOptions(@Valid @RequestBody List<OptionParam> optionParams) {
-        optionService.save(optionParams, "system");
+        optionService.save(optionParams, OptionSource.SYSTEM);
     }
 
     @GetMapping("map_view")
@@ -45,6 +46,6 @@ public class OptionController {
     @PostMapping("map_view/saving")
     @ApiOperation("Saves options by option map")
     public void saveOptionsWithMapView(@RequestBody Map<String, String> optionMap) {
-        optionService.save(optionMap, "system");
+        optionService.save(optionMap, OptionSource.SYSTEM);
     }
 }
diff --git a/src/main/java/cc/ryanc/halo/web/controller/admin/api/ThemeController.java b/src/main/java/cc/ryanc/halo/web/controller/admin/api/ThemeController.java
index 40c4874cb..18a8c86d1 100644
--- a/src/main/java/cc/ryanc/halo/web/controller/admin/api/ThemeController.java
+++ b/src/main/java/cc/ryanc/halo/web/controller/admin/api/ThemeController.java
@@ -1,6 +1,7 @@
 package cc.ryanc.halo.web.controller.admin.api;
 
 import cc.ryanc.halo.model.enums.BlogProperties;
+import cc.ryanc.halo.model.enums.OptionSource;
 import cc.ryanc.halo.model.support.Theme;
 import cc.ryanc.halo.service.OptionService;
 import cc.ryanc.halo.service.ThemeService;
@@ -61,7 +62,7 @@ public class ThemeController {
     public void active(@RequestParam(name = "themeName", defaultValue = "anatole") String themeName) throws TemplateModelException {
         Map<BlogProperties, String> properties = new HashMap<>(1);
         properties.put(BlogProperties.THEME, themeName);
-        optionService.saveProperties(properties, "system");
+        optionService.saveProperties(properties, OptionSource.SYSTEM);
         BaseContentController.THEME = themeName;
         configuration.setSharedVariable("themeName", themeName);
         configuration.setSharedVariable("options", optionService.listOptions());
diff --git a/src/main/java/cc/ryanc/halo/web/controller/core/InstallController.java b/src/main/java/cc/ryanc/halo/web/controller/core/InstallController.java
index 47f26d962..9f3e4ede7 100644
--- a/src/main/java/cc/ryanc/halo/web/controller/core/InstallController.java
+++ b/src/main/java/cc/ryanc/halo/web/controller/core/InstallController.java
@@ -4,6 +4,7 @@ import cc.ryanc.halo.exception.BadRequestException;
 import cc.ryanc.halo.model.entity.*;
 import cc.ryanc.halo.model.enums.AttachmentType;
 import cc.ryanc.halo.model.enums.BlogProperties;
+import cc.ryanc.halo.model.enums.OptionSource;
 import cc.ryanc.halo.model.params.InstallParam;
 import cc.ryanc.halo.model.support.BaseResponse;
 import cc.ryanc.halo.service.*;
@@ -175,7 +176,7 @@ public class InstallController {
         properties.put(BlogProperties.ATTACHMENT_TYPE, AttachmentType.LOCAL.getValue().toString());
 
         // Create properties
-        optionService.saveProperties(properties, "system");
+        optionService.saveProperties(properties, OptionSource.SYSTEM);
     }
 
 //    /**