The invention provides a system for automatic adjustment of a main board testing process and an implement method thereof. The testing process is adjusted according to a failure rate of various testing. The implement method of the system for the automatic adjustment of the main board testing process comprises recognizing a to-be-tested single item which a main board needs to test through a recognizing module; reading a testing failure rate of the to-be-tested single item from a database through a reading module; arranging the to-be-tested single items according to testing failure rate from high to low through an adjusting module to form a new testing procedure; testing all the to-be-tested single items according to the new testing procedure by means of a testing tool through the testing module to obtain testing results; storing testing results of the to-be-tested single items into the database through a storing module.