The invention provides a detection method for data collision in a processing data task, and servers, wherein one method is applied in a message center server. The method comprises: responding to a first lock request list which is sent by a processing data server and has a current structured query language SQL script, generating a second lock request list; according to a preset collision detection rule and the second lock request list, detecting whether a current instance and other instances generated by other SQL scripts are conflicted in execution. In the method, through introducing the second lock request list and establishing a heartbeat mechanism with the instances as a unit and a message notification mechanism of lock collision, the number of lock requests is effectively reduced, access pressure caused by a lock mechanism is reduced, and lock request response is improved. The method can also provide convenience for users to check which instances generated by SQL have execution collision with the instance generated by an own SQL.