Breathing machine control method and breathing machine apply control method

The invention discloses a breathing machine control method and a breathing machine applying the control method. The breathing machine comprises a flow sensor, a pressure sensor, a microcontroller, a motor power amplifier and a blower. The breathing machine adopts a breathing synchronization pressure control method; particularly, the flow sensor detects the change in the flow of a pipeline, an expiration state and an inspiration state of a patient are judged according to a set flow threshold; and further, a preset pressure level is selected for switching according to the breathing state. Generally, when inspiration is converted into expiration in an air path system, man-machine confrontation is caused due to air accumulation at a nasal mask end. Therefore, a deviation between a set inspiration duration and a forecast duration serves as a time stamp of the beginning of the expiration after adjustment. The lower expiratory pressure is selected in advance, so that the pressure can be released timely, the man-machine confrontation is eliminated, and the man-machine synchronism is improved. The control mode meets breathing physiology requirements of people, and the breathing comfort and effectiveness of the patient are guaranteed.