diff --git a/src/bin/capsule.rs b/src/bin/capsule.rs
index 0ca2bb4..6c40217 100644
--- a/src/bin/capsule.rs
+++ b/src/bin/capsule.rs
@@ -95,9 +95,22 @@ fn run_cli() -> Result<()> {
         .args(&[Arg::with_name("name").short("n").long("name").required(true).takes_value(true).help("contract name"),
                 Arg::with_name("cmd").required(true).multiple(true).help("command to run")])
         .display_order(4))
-        .subcommand(SubCommand::with_name("test").about("Run tests").arg(
-                    Arg::with_name("release").long("release").help("Test release mode contracts.")
-        ).display_order(5))
+        .subcommand(
+            SubCommand::with_name("test")
+                .about("Run tests")
+                .arg(
+                    Arg::with_name("release")
+                        .long("release")
+                        .help("Test release mode contracts.")
+                )
+                .arg(
+                    Arg::with_name("testname")
+                        .takes_value(true)
+                        .value_name("TESTNAME")
+                        .help("If specified, only run tests containing this string in their names.")
+                )
+                .display_order(5)
+        )
         .subcommand(
             SubCommand::with_name("deploy")
                 .about("Deploy contracts, edit deployment.toml to custodian deployment recipe.")
@@ -312,7 +325,7 @@ fn run_cli() -> Result<()> {
             } else {
                 BuildEnv::Debug
             };
-            Tester::run(&context, build_env, &signal)?;
+            Tester::run(&context, build_env, &signal, args.value_of("testname"))?;
         }
         ("deploy", Some(args)) => {
             Checker::build()?.check_ckb_cli()?;
diff --git a/src/tester.rs b/src/tester.rs
index bfc107b..69acc26 100644
--- a/src/tester.rs
+++ b/src/tester.rs
@@ -8,7 +8,12 @@ const TEST_ENV_VAR: &str = "CAPSULE_TEST_ENV";
 pub struct Tester;
 
 impl Tester {
-    pub fn run(project_context: &Context, env: BuildEnv, signal: &Signal) -> Result<()> {
+    pub fn run(
+        project_context: &Context,
+        env: BuildEnv,
+        signal: &Signal,
+        testname: Option<&str>,
+    ) -> Result<()> {
         let env_arg = match env {
             BuildEnv::Debug => "debug",
             BuildEnv::Release => "release",
@@ -31,8 +36,10 @@ impl Tester {
                 .fix_dir_permission("Cargo.lock".to_string());
         cmd.run(
             format!(
-                "{}={} cargo test -p tests -- --nocapture",
-                TEST_ENV_VAR, env_arg
+                "{}={} cargo test {} -p tests -- --nocapture",
+                TEST_ENV_VAR,
+                env_arg,
+                testname.unwrap_or(""),
             ),
             signal,
         )?;