A shield and locking type board to board connector functioning to connect a first board and a second board to each other, the connector including: a first connector unit having both a first base and a first terminal; a second connector unit having a second base and a second terminal; two shield members each having a shell shape, the shield members respectively provided on front and rear bases facing the second base such that the shield members arrest EMI (electromagnetic interference) noise; and a locking member provided in the second connector unit so as to prevent the first connector unit from being removed outward by an outward movement thereof after the first connector unit is combined with the second connector unit in a close contact state.