diff --git a/Cargo.lock b/Cargo.lock
index 7a41d90..ee77508 100644
--- a/Cargo.lock
+++ b/Cargo.lock
@@ -4,7 +4,7 @@ version = 3
 
 [[package]]
 name = "acme-client"
-version = "1.0.1"
+version = "1.0.2"
 dependencies = [
  "acme-lib",
  "async-std",
diff --git a/Cargo.toml b/Cargo.toml
index 515d90c..52cec65 100644
--- a/Cargo.toml
+++ b/Cargo.toml
@@ -1,6 +1,6 @@
 [package]
 name = "acme-client"
-version = "1.0.1"
+version = "1.0.2"
 authors = ["Hatter Jiang <jht5945@gmail.com>"]
 edition = "2018"
 description = "Acme auto challenge client, acme-client can issue certificates from Let's encrypt"
diff --git a/src/main.rs b/src/main.rs
index c841170..5d540d2 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -56,6 +56,7 @@ struct AcmeRequest<'a> {
     local_public_ip: Option<&'a str>,
     key_file: Option<String>,
     cert_file: Option<String>,
+    outputs_file: Option<String>,
 }
 
 #[async_std::main]
@@ -76,6 +77,7 @@ async fn main() -> tide::Result<()> {
         .arg(Arg::with_name("dir").long("dir").takes_value(true).default_value("acme_dir").help("Account key dir"))
         .arg(Arg::with_name("cert-dir").long("cert-dir").takes_value(true).help("Certificate dir"))
         .arg(Arg::with_name("config").short("c").long("config").takes_value(true).help("Cert config"))
+        .arg(Arg::with_name("outputs").short("o").long("outputs").takes_value(true).help("Outputs file"))
         .arg(Arg::with_name("check").long("check").help("Check cert config"))
         .arg(Arg::with_name("hide-logo").long("hide-logo").help("Hide logo"))
         .arg(Arg::with_name("skip-verify-ip").short("k").long("skip-verify-ip").help("Skip verify public ip"))
@@ -246,6 +248,7 @@ async fn main() -> tide::Result<()> {
                 local_public_ip: local_public_ip.as_deref(),
                 cert_file,
                 key_file,
+                outputs_file: matches.value_of("outputs").map(|s| s.into()),
                 ..Default::default()
             };
             if let Err(e) = request_acme_certificate(acme_request) {
@@ -280,6 +283,7 @@ async fn main() -> tide::Result<()> {
                         local_public_ip: local_public_ip.as_deref(),
                         cert_file: Some(format!("{}/{}", item.path, CERT_NAME)),
                         key_file: Some(format!("{}/{}", item.path, KEY_NAME)),
+                        outputs_file: None,
                     };
                     if let Err(e) = request_acme_certificate(acme_request) {
                         failure!("Request certificate: {}, by acme failed: {}", item.path, e);
@@ -470,6 +474,15 @@ fn request_acme_certificate(acme_request: AcmeRequest) -> XResult<()> {
             failure!("Write file: {}, failed: {}", key_file, e);
         }
         success!("Write files success: {} and {}", cert_file, key_file);
+    } else if let Some(outputs_file) = &acme_request.outputs_file {
+        let mut outputs = String::new();
+        outputs.push_str("private key:\n");
+        outputs.push_str(cert.private_key());
+        outputs.push_str("\n\ncertificates:\n");
+        outputs.push_str(cert.certificate());
+        if let Err(e) = fs::write(outputs_file, outputs) {
+            failure!("Write file: {}, failed: {}", outputs_file, e);
+        }
     } else {
         information!("Certificate key: {}",  cert.private_key());
         information!("Certificate pem: {}",  cert.certificate());