The present invention discloses a working condition load analysis system based on a multi-sensor network. The working condition load analysis system comprises a controller, a vehicle attitude sensor, a pressure sensor, an engine torque sensor, a gearbox torque sensor, a vehicle speed sensor, an engine rotating speed sensor and an internet of things gateway. The vehicle attitude sensor, the pressure sensor, the engine torque sensor, the gearbox torque sensor, the vehicle speed sensor and the engine rotating speed sensor are all in communication connection with the controller, and the controller is in data communication with a remote data platform via the internet of things gateway. The working condition load analysis system real-timely analyzes the working condition loads, and the analysis results are applied to the control of a mechanical work device and intervene in an auxiliary driving function and an automatic gear control function, thereby simplifying the mechanical operation, reducing the labor intensity of the operation machinists, at the same time, improving the working efficiency.