The embodiments are a replaceable gimbal camera, an aircraft, an aircraft system, and a gimbal replacement method for an aircraft. The replaceable gimbal camera is applied to the aircraft. The aircraft is provided with a fuselage and a gimbal. The replaceable gimbal camera includes an image capture module, a static storage module, and an image processing module. The static storage module is configured to store parameter data. The image processing module is configured to read the parameter data stored in the static storage module, where after the gimbal is replaced, the image processing module is configured to read parameter data of a gimbal after replacement and configure corresponding parameter data for an image capture module of the gimbal after replacement.