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--- a/README.md
+++ b/README.md
@@ -1,3 +1,33 @@
 # ansible
 
-General Ansible repository
\ No newline at end of file
+General Ansible repository
+
+## Vault
+
+#### Encrypt file
+
+Use "ansible-vault-encrypt" to encrypt a file
+
+> ansible-vault-encrypt ansible/vars/vault.yml
+
+
+#### Decrypt file
+
+Use "ansible-vault-decrypt" to decrypt a file
+
+> ansible-vault-decrypt ansible/vars/vault.yml
+
+
+#### Edit encrypt file
+
+Use "ansible-vault edit" to open and modify an encrypt a file
+
+> ansible-vault edit ansible/vars/vault.yml
+
+#### View content of encrypt file
+
+Use "ansible-vault view" to read the decrypted content of vault file without modify
+
+> ansible-vault edit ansible/vars/vault.yml
+
+