OCCUPANT DECISION DEVICE FOR VEHICLE

Load sensors 4FR, 4RR, 4FL, 4RL are disposed on four corners of a seat cushion. An occupant decision section 51 of an occupant detection ECU 5 decides a type of an occupant BH on a vehicle seat based on loads Wfr to Wrl detected by the load sensors 4FR to 4RL. A CRS changing section 53 that prohibits the occupant decision section 51 from changing a decision to a decision result that an adult is seated in the vehicle seat and changes the decision to a decision result that a child seat is attached on the vehicle seat when an engagement of a tongue plate with a buckle of a seat belt device is detected by a buckle switch 3 and a buckle load Wb calculated by buckle load calculation section 54 is less than a predetermined buckling load threshold Wbth1, Wbth2 in a case where the occupant decision section 51 decides that an adult is seated in the vehicle seat.