one or more time wrong password enter in login page then lock the password and then how to retify it

It depends on how you handle your password entry, and what kind of application you are writing. If this is a web site, then I would expect you to be using Membership, which means it needs to be handled within that framework. I you have rolled your own for a windows app say, then it would need to be handled in a different manner.

The basic principle is simple though, and similar to lost password handling:
Count the "bad password" entries.
When he tries to enter a password, check the count: if it exceeds your limit then refuse entry with a "blocked" message.
If it doesn't, then check the password - if it is valid, zero the count.
If it isn't increase the count by one. If it now reached your limit, then send an email to the users email, with a link to follow to reset the password. Then refuse entry with the message as above.

Some systems may require a supervisor to reset the password - it depends on your security protocols.

It is normal to give people three chances though - one strike and your out is a bit draconian!