The invention provides an air inlet connecting pipe press-in procedure work method. The method comprises the following steps that 1, an air cylinder air inlet is planed through a stirring bar to be concentric with a shell seat ring hole; 2, a press head assembly sleeved with an air inlet connecting pipe is stuffed into an air cylinder air suction hole; 3, the connecting pipe is pressed in. By the adoption of the air inlet connecting pipe press-in procedure work method, the rejection rate caused by entering of foreign matter can be effectively reduced, therefore, economic loss is reduced, and production efficiency is improved.