diff --git a/src/main/java/run/halo/app/theme/finders/PluginFinder.java b/src/main/java/run/halo/app/theme/finders/PluginFinder.java
new file mode 100644
index 000000000..67339bb64
--- /dev/null
+++ b/src/main/java/run/halo/app/theme/finders/PluginFinder.java
@@ -0,0 +1,12 @@
+package run.halo.app.theme.finders;
+
+/**
+ * A finder for {@link run.halo.app.core.extension.Plugin}.
+ *
+ * @author guqing
+ * @since 2.0.0
+ */
+public interface PluginFinder {
+
+    boolean available(String pluginName);
+}
diff --git a/src/main/java/run/halo/app/theme/finders/impl/PluginFinderImpl.java b/src/main/java/run/halo/app/theme/finders/impl/PluginFinderImpl.java
new file mode 100644
index 000000000..f275683a5
--- /dev/null
+++ b/src/main/java/run/halo/app/theme/finders/impl/PluginFinderImpl.java
@@ -0,0 +1,33 @@
+package run.halo.app.theme.finders.impl;
+
+import lombok.AllArgsConstructor;
+import org.apache.commons.lang3.StringUtils;
+import org.pf4j.PluginState;
+import org.pf4j.PluginWrapper;
+import run.halo.app.plugin.HaloPluginManager;
+import run.halo.app.theme.finders.Finder;
+import run.halo.app.theme.finders.PluginFinder;
+
+/**
+ * Plugin finder implementation.
+ *
+ * @author guqing
+ * @since 2.0.0
+ */
+@Finder("pluginFinder")
+@AllArgsConstructor
+public class PluginFinderImpl implements PluginFinder {
+    private final HaloPluginManager haloPluginManager;
+
+    @Override
+    public boolean available(String pluginName) {
+        if (StringUtils.isBlank(pluginName)) {
+            return false;
+        }
+        PluginWrapper pluginWrapper = haloPluginManager.getPlugin(pluginName);
+        if (pluginWrapper == null) {
+            return false;
+        }
+        return PluginState.STARTED.equals(pluginWrapper.getPluginState());
+    }
+}
diff --git a/src/test/java/run/halo/app/theme/finders/impl/PluginFinderImplTest.java b/src/test/java/run/halo/app/theme/finders/impl/PluginFinderImplTest.java
new file mode 100644
index 000000000..aba947ef2
--- /dev/null
+++ b/src/test/java/run/halo/app/theme/finders/impl/PluginFinderImplTest.java
@@ -0,0 +1,50 @@
+package run.halo.app.theme.finders.impl;
+
+import static org.assertj.core.api.Assertions.assertThat;
+import static org.mockito.ArgumentMatchers.eq;
+import static org.mockito.Mockito.when;
+
+import org.junit.jupiter.api.Test;
+import org.junit.jupiter.api.extension.ExtendWith;
+import org.mockito.InjectMocks;
+import org.mockito.Mock;
+import org.mockito.Mockito;
+import org.mockito.junit.jupiter.MockitoExtension;
+import org.pf4j.PluginState;
+import org.pf4j.PluginWrapper;
+import run.halo.app.plugin.HaloPluginManager;
+
+/**
+ * Tests for {@link PluginFinderImpl}.
+ *
+ * @author guqing
+ * @since 2.0.0
+ */
+@ExtendWith(MockitoExtension.class)
+class PluginFinderImplTest {
+    @Mock
+    private HaloPluginManager haloPluginManager;
+
+    @InjectMocks
+    private PluginFinderImpl pluginFinder;
+
+    @Test
+    void available() {
+        assertThat(pluginFinder.available(null)).isFalse();
+
+        boolean available = pluginFinder.available("fake-plugin");
+        assertThat(available).isFalse();
+
+        PluginWrapper mockPluginWrapper = Mockito.mock(PluginWrapper.class);
+        when(haloPluginManager.getPlugin(eq("fake-plugin")))
+            .thenReturn(mockPluginWrapper);
+
+        when(mockPluginWrapper.getPluginState()).thenReturn(PluginState.RESOLVED);
+        available = pluginFinder.available("fake-plugin");
+        assertThat(available).isFalse();
+
+        when(mockPluginWrapper.getPluginState()).thenReturn(PluginState.STARTED);
+        available = pluginFinder.available("fake-plugin");
+        assertThat(available).isTrue();
+    }
+}
\ No newline at end of file