A drive motor module includes a motor, an inverter electrically connected to the motor, a housing including a motor housing that houses the motor and an inverter housing that houses the inverter, in which the housing includes a wall portion including a first side and a second side opposing each other and directed outside of the housing, N (N is an integer of 2 or more) high rigidity portions provided with a distance therebetween along the first side and having higher rigidity than the wall portion, and a first rib protruding from the wall portion and extending obliquely at a positive angle from first to (N−1)-th high rigidity portions toward the second side when the N high rigidity portions provided along the first side are defined as the first to N-th high rigidity portions in order.