The present application discloses a cam type airplane cabin door load simulation device and simulation method. The device comprises n cam groups, an input shaft, 3n couplers, and a friction disc load device; the n cam groups and the friction disc load device are connected in series by means of the input shaft; 3n couplers are provided on the input shaft; each cam group comprises a gravity cam simulation device, an inertia cam simulation device, and a wind load cam simulation device; and in each cam group, the gravity cam simulation device, the inertia cam simulation device, and the wind load cam simulation device are sequentially connected in series by means of the input shaft, and the tail ends of the n cam groups are connected in series with the friction disc load device by means of a coupler.