diff --git a/build.json b/build.json
index f00a227..3e47709 100644
--- a/build.json
+++ b/build.json
@@ -12,6 +12,7 @@
     },
     "repo": {
         "dependencies": [
+            "info.picocli:picocli:4.6.1",
             "me.hatter:commons:3.0",
             "org.bouncycastle:bcprov-ext-jdk15on:1.70",
             "org.bouncycastle:bcpg-jdk15on:1.70",
diff --git a/src/main/java/me/hatter/tool/signpdf/main/SignPdfArgs.java b/src/main/java/me/hatter/tool/signpdf/main/SignPdfArgs.java
new file mode 100644
index 0000000..86b2412
--- /dev/null
+++ b/src/main/java/me/hatter/tool/signpdf/main/SignPdfArgs.java
@@ -0,0 +1,27 @@
+package me.hatter.tool.signpdf.main;
+
+import picocli.CommandLine;
+
+@CommandLine.Command(name = SignPdfConstant.NAME,
+        version = SignPdfConstant.NAME + " v" + SignPdfConstant.VERSION,
+        description = "\n" +
+                "Sign PDF tool\n" +
+                "\n" +
+                "Argument details:")
+public class SignPdfArgs {
+    @CommandLine.Option(names = {"--in"}, description = "PDF file in")
+    String in;
+    @CommandLine.Option(names = {"--out"}, description = "PDF file out")
+    String out;
+    @CommandLine.Option(names = {"--name"}, description = "Name")
+    String name;
+    @CommandLine.Option(names = {"--location"}, description = "Location")
+    String location;
+    @CommandLine.Option(names = {"--reason"}, description = "Reason")
+    String reason;
+
+    @CommandLine.Option(names = {"-h", "--help"}, usageHelp = true, description = "Display a help message")
+    boolean helpRequested = false;
+    @CommandLine.Option(names = {"-V", "--version"}, versionHelp = true, description = "Display a version message")
+    boolean versionRequested = false;
+}
diff --git a/src/main/java/me/hatter/tool/signpdf/main/SignPdfArgsUtil.java b/src/main/java/me/hatter/tool/signpdf/main/SignPdfArgsUtil.java
new file mode 100644
index 0000000..dc05650
--- /dev/null
+++ b/src/main/java/me/hatter/tool/signpdf/main/SignPdfArgsUtil.java
@@ -0,0 +1,33 @@
+package me.hatter.tool.signpdf.main;
+
+import me.hatter.tools.commons.log.LogTool;
+import me.hatter.tools.commons.log.LogTools;
+import picocli.CommandLine;
+
+public class SignPdfArgsUtil {
+    private static final LogTool log = LogTools.getLogTool(SignPdfArgsUtil.class);
+
+    public static SignPdfArgs parseArgs(String[] args) {
+        try {
+            return innerParseArgs(args);
+        } catch (CommandLine.UnmatchedArgumentException unmatchedArgumentException) {
+            log.error("Parse args failed: " + unmatchedArgumentException.getMessage());
+            return null;
+        }
+    }
+
+    public static SignPdfArgs innerParseArgs(String[] args) {
+        final SignPdfArgs signPdfArgs = new SignPdfArgs();
+        final CommandLine cmd = new CommandLine(signPdfArgs);
+        cmd.parseArgs(args);
+
+        if (cmd.isUsageHelpRequested()) {
+            cmd.usage(cmd.getOut());
+        } else if (cmd.isVersionHelpRequested()) {
+            cmd.printVersionHelp(cmd.getOut());
+        } else {
+            return signPdfArgs;
+        }
+        return null;
+    }
+}
diff --git a/src/main/java/me/hatter/tool/signpdf/main/SignPdfConstant.java b/src/main/java/me/hatter/tool/signpdf/main/SignPdfConstant.java
new file mode 100644
index 0000000..f7e914a
--- /dev/null
+++ b/src/main/java/me/hatter/tool/signpdf/main/SignPdfConstant.java
@@ -0,0 +1,6 @@
+package me.hatter.tool.signpdf.main;
+
+public interface SignPdfConstant {
+    String NAME = "sign-pdf";
+    String VERSION = "0.0.0";
+}
diff --git a/src/main/java/me/hatter/tool/signpdf/main/SignPdfMain.java b/src/main/java/me/hatter/tool/signpdf/main/SignPdfMain.java
index 8dbe3b0..8c0a31c 100644
--- a/src/main/java/me/hatter/tool/signpdf/main/SignPdfMain.java
+++ b/src/main/java/me/hatter/tool/signpdf/main/SignPdfMain.java
@@ -19,15 +19,28 @@ import java.util.List;
 public class SignPdfMain {
 
     public static void main(String[] args) throws Exception {
-        final SignOptions signOptions = new SignOptions();
-        signOptions.setName("Example User");
-        signOptions.setLocation("Hangzhou, ZJ");
-        signOptions.setReason("Testing");
+        final SignPdfArgs signPdfArgs = SignPdfArgsUtil.parseArgs(args);
+        if (signPdfArgs == null) {
+            return;
+        }
+        if (StringUtil.isEmpty(signPdfArgs.in) || StringUtil.isEmpty(signPdfArgs.out)) {
+            throw new RuntimeException("PDF file in/out cannot be empty.");
+        }
 
-        final File inFile = new File("Resume.pdf");
-        final String name = inFile.getName();
-        final String substring = name.substring(0, name.lastIndexOf('.'));
-        final File outFile = new File(inFile.getParent(), substring + "_signed.pdf");
+        final SignOptions signOptions = new SignOptions();
+        signOptions.setName(signPdfArgs.name);
+        signOptions.setLocation(signPdfArgs.location);
+        signOptions.setReason(signPdfArgs.reason);
+
+        final File inFile = new File(signPdfArgs.in);
+        final File outFile = new File(signPdfArgs.out);
+
+        if (!inFile.exists()) {
+            throw new RuntimeException("PDF file in not exists.");
+        }
+        if (outFile.exists()) {
+            throw new RuntimeException("PDF file out exists.");
+        }
 
         final List<X509Certificate> certs = X509CertUtil.parseX509CertificateList(
                 RFile.from("__certs.pem").string()