A decompression device includes an upstream throttle portion, a middle passage portion and a downstream throttle portion, which are arranged within a body portion. The upstream throttle portion is a variable throttle including an upstream throttle passage in which the refrigerant is decompressed and expanded, and a valve body having an open degree adjusting portion configured to adjust an open degree of the upstream throttle passage. The downstream throttle portion is a fixed throttle for decompressing and expanding refrigerant flowing from the middle passage portion. Furthermore, a refrigerant passage defined from the upstream throttle portion to the downstream throttle portion through the middle passage portion is provided in the body portion, and is bent at least at a bent portion in which the refrigerant flow is bent in the body portion.