The invention discloses a duplexing filter switch based on coupling control, and the switch comprises an upper microstrip structure, an intermediate dielectric substrate and a bottom metal floor, wherein the upper microstrip structure is provided with a first feed line, a second feed line, a third feed line, a first resonator, a second resonator, a third resonator, a fourth resonator, a first switching circuit and a second switching circuit. The three feed lines and four resonators forms a filter network which works at two different frequencies. The duplex filter switch proposed by the invention can be applied to two working frequency bands which are close to each other, and is creative and practical.