Provided is a rotary type valve device capable of being easily assembled and securing desired sealing performance. The rotary type valve device includes a rotor having an internal passage formed around an axis and an opening portion which opens outward from the internal passage to an outer contour surface in a radial direction, a housing supporting the rotor to be rotatable around the axis and defining an axial passage communicating with the internal passage and a radial passage facing the outer contour surface and capable of communicating with the opening portion, a passage member disposed in the housing to define a part of the radial passage, and a biasing spring biasing the passage member toward the outer contour surface. The housing comprises a housing body accommodating the rotor, and a holding member coupled to the housing body and having a tubular portion holding the biasing spring and the passage member.