The utility model discloses a flexible push rod mechanism and have this flexible push rod mechanism's power tool machine, wherein flexible push rod mechanism installs in the machine tool main part, including first push rod, second push rod and locking piece, when the locking piece is the lock -out state, the unable recurrence of second push rod the flexible removal, its characteristics be, still include with the trigger device of locking piece linkage, trigger trigger device when the locking piece is the lock -out state, start the power tool machine. The utility model discloses having set up switch protection device, having ensured that the locking piece just can micro -switches after locking flexible push rod mechanism completely, when the master switch triggered with switch protection device together, the machine just can start, has strengthened the security greatly, and it does not have start machine under the condition about locking at the push rod that stretches out and draws backto prevent, prevents that the operator from receiving the accidental injury.