diff --git a/README.md b/README.md
index ea5a7fed..6cc1528d 100644
--- a/README.md
+++ b/README.md
@@ -67,6 +67,7 @@ You can use these commands by `:CocCommand XYZ`.
 - `rust-analyzer.expandMacro`: Expand macro recursively
 - `rust-analyzer.joinLines`: Join lines
 - `rust-analyzer.matchingBrace`: Find matching brace
+- `rust-analyzer.openDocs`: Open docs under cursor
 - `rust-analyzer.parentModule`: Locate parent module
 - `rust-analyzer.reload`: Restart rust-analyzer server
 - `rust-analyzer.run`: List available runnables of current file
diff --git a/package.json b/package.json
index 3be16c1d..5fef23ee 100644
--- a/package.json
+++ b/package.json
@@ -461,6 +461,11 @@
         "title": "Find matching brace",
         "category": "Rust Analyzer"
       },
+      {
+        "command": "rust-analyzer.openDocs",
+        "title": "Open docs under cursor",
+        "category": "Rust Analyzer"
+      },
       {
         "command": "rust-analyzer.parentModule",
         "title": "Locate parent module",
diff --git a/src/commands.ts b/src/commands.ts
index 377143ea..134d9521 100644
--- a/src/commands.ts
+++ b/src/commands.ts
@@ -362,3 +362,19 @@ export function resolveCodeAction(ctx: Ctx): Cmd {
     await applySnippetWorkspaceEdit(edit);
   };
 }
+
+export function openDocs(ctx: Ctx): Cmd {
+  return async () => {
+    const { document, position } = await workspace.getCurrentState();
+    if (!isRustDocument(document)) return;
+
+    const param: TextDocumentPositionParams = {
+      textDocument: { uri: document.uri },
+      position,
+    };
+    const doclink = await ctx.client.sendRequest(ra.openDocs, param);
+    if (doclink) {
+      await commands.executeCommand('vscode.open', Uri.parse(doclink));
+    }
+  };
+}
diff --git a/src/index.ts b/src/index.ts
index 8a63e573..eef0efb0 100644
--- a/src/index.ts
+++ b/src/index.ts
@@ -41,6 +41,7 @@ export async function activate(context: ExtensionContext): Promise<void> {
   ctx.registerCommand('expandMacro', cmds.expandMacro);
   ctx.registerCommand('joinLines', cmds.joinLines);
   ctx.registerCommand('matchingBrace', cmds.matchingBrace);
+  ctx.registerCommand('openDocs', cmds.openDocs);
   ctx.registerCommand('parentModule', cmds.parentModule);
   ctx.registerCommand('run', cmds.run);
   ctx.registerCommand('runSingle', cmds.runSingle);
diff --git a/src/lsp_ext.ts b/src/lsp_ext.ts
index da3ba45a..1871571d 100644
--- a/src/lsp_ext.ts
+++ b/src/lsp_ext.ts
@@ -117,3 +117,5 @@ export interface CommandLinkGroup {
   title?: string;
   commands: CommandLink[];
 }
+
+export const openDocs = new lc.RequestType<lc.TextDocumentPositionParams, string | void, void>('experimental/externalDocs');