Provided is an intelligent children's lung function test training device. The invention relates to a device which is used for testing and training children's lung functions. The device mainly comprises a detection device in an air-blown state, and the device can be connected to an intelligent mobile terminal. The detection device comprises a shell body, a test circuit board, an air pressure washer and a lithium battery. Children blow toward the detection device, so that certain air pressure is generated in an expiratory tube; the detection device continuously collects pressure data in real time and figures out expiratory volume and peak systolic velocity according to the air pressure and sends data value to the intelligent mobile terminal; through designing an interesting animation game interface, an APP software of the terminal guides the children to make best training effects and can store test results to a background server for reference when doctors make diagnoses. Through the APP software of the terminal, children's parents can interact and communicate with the doctors, and it is convenient for the doctors to conduct health intervention.