To provide a receiver tank which improves mounting performance to a heat exchanger and reducing manufacturing costs by reducing the number of components.

A receiver dryer 10 is firmly mounted on a capacitor 1 by engagement of a male screw 26 formed at a tip 23 of a joint 12 disposed on the receiver dryer 10 and a female screw 7 formed on a connection hole 6 of an opening 4 formed on the capacitor 1. A strainer 27 for removing foreign matter in a refrigerant, can be easily fixed highly efficiently in a simple structure, since a flange 27b of the strainer 27 is held between a tip face of the tip 23 of the joint 12 and a bottom face of the connection hole 6 in screwing the receiver dryer 10 into the capacitor 1.