System using seats for controlling ship draft

The invention provides a system using seats used for controlling the ship draft and belongs to the field of navigating equipment. The system comprises a first pressure sensor, a second pressure sensor, a thermo release sensor, a switch, a support, a base plate, a baffle and a wire. The base plate is fixedly connected with the support. The baffle is fixed to the support. The first pressure sensor and the second pressure sensor are embedded in the baffle and the base plate respectively. The thermo release sensor is embedded in the base plate. When people sit on the system, the first pressure sensor and the second pressure sensor arranged on the baffle and the base plate respectively can detect whether mass exists; meanwhile, the thermo release sensor detects a temperature signal and transmits the signal to a processing system; according to the signal, whether a ship exceeds the seating capacity can be judged, the ship draft can be adjusted, and a hull can keep balance. The seats are capable of being applied to a ship cabin, a meeting room and the like so that the number of people can be obtained clearly, whether passenger distribution is uniform can be judged, the ship shaft can be adjusted to enable the hull to keep balance, and therefore accidents can be prevented.