A flow channel switching valve is provided in which a stator and a rotor are contained in an internal space of a housing, and a packing is sandwiched between a flow channel connection plane, which is one plane of the internal space of the housing, and the stator. In the flow channel connection plane of the housing, a packing gland is provided at a distance from a flow channel connection portion so as to surround an outer circumference of the flow channel connection portion, and the packing gland is in contact with a circumferential edge portion of the packing on the same plane as the flow channel connection portion.