The binary logic gate circuit includes a double-selection basic switching circuit with three input ends, one output end two switch element whose polarities are opposite, and is characterized by hat at least it also has a bisic switching circuit connected with logic gate circuit, and said basic switching circuit is equipped with two input ends, two output ends and two switch element with opposite polarity. Because the binary logic gate circuit possesses double selectivity and compatibility, so that the simple combination of the binary logic gate circuit can obtain the logic gate circuit more than unary logic gate circuit, besides, the "either-or" property in the double-selection can obtain several logic results, it possesses dynamic selectability and writability, and can provide more hardware support for development of computer.