A connector mounting structure includes a circuit board and a male connector. The male connector is surface-mounted to the circuit board and has a housing and terminals. The housing includes a body member and a fixing member fixed to the body member. The fixing member has a tube portion and a protection portion. The tube portion receives a housing of an external female connector. Each terminal has first and second ends. The first end is exposed to a surface of the body member and soldered to the circuit board. The second end is also exposed to the surface of the body member to be electrically connectable to the female connector. The protection portion is placed between the first and second ends in a thickness direction of the circuit board to cover facing area between adjacent first ends.