The invention discloses a measuring device for measuring thrust of a mini-type solid chemical thruster. The device mainly comprises a supporting part, a force balance scale, an MEMS (Micro-electromechanical System) inertia measurement combination 7, a capacitive sensor 13, a mini-type solid chemical thruster 10 and a signal and processing system. The measuring device is characterized in that the influences on a measuring result by self weights of a thrusting system and the sensor are eliminated through the force balance scale; the measurement uncertainty caused by a single sensor error is avoided by adopting a multi-sensor measurement combination, and the accuracy and the reliability of measurement are improved; and the MEMS inertia measurement combination is combined with the capacitive sensor to measure the greatest thrust of the mini-type chemical thruster; and a high-precision MEMS accelerometer, an MEMS gyroscope and a high-sampling-frequency signal processing circuit are adopted so that the change of the size of the thrust can be monitored in real time.