The invention discloses a durable type tapping machine for machining an automobile engine support, and relates to the technical field of manufacturing of automobile parts. A transmission connecting rod moves back and forth on a sliding rail which is arranged in the middle of the rack; one end of the transmission connecting rod penetrates through a transition rod to be connected with a tapping needle; a workpiece is arranged above the transition rod and is fixed and positioned by a positioning mechanism; the positioning mechanism comprises a lower positioning block, a lateral side positioning block and an upper positioning block; an automatic clamping mechanism is arranged on the top of the rack; a foot rest is arranged at the bottom of the rack; an electric cabinet and an oil cylinder are arranged in the rack; the rack is connected with a display by a telescopic rod; an automatic alarm is arranged on the top of the display; a plurality of CCD cameras connected with a display are arranged on the top of the transition rod; protective layers are arranged on the surfaces of the transmission connecting rod and the tapping needle. The tapping machine disclosed by the invention is high in machining precision, is convenient for working staffs to monitor working states of the mechanism in real time, is long in service life, good in security, is easy to operate for persons, and guarantees high-efficiency and stable tapping works for a long time.