A wheelchair 9 including a seating bottom portion 15, a chair back bottom support member 14a supporting a chair back bottom member 15a, a chair knee bottom support, member 14c supporting a chair knee bottom member 15b, a chair leg first bottom support member 14d bendably coupled to the chair knee bottom support member 14c, the chair leg first bottom support member 14d supporting a chair leg first bottom member 15d, a chair leg second bottom support member 14e bendably coupled to the chair leg first bottom support member 15d, the chair leg second bottom support member 14e supporting a chair leg second bottom member 15e, a chair base portion 13 bendably coupling the chair back bottom support member 14a and the chair knee bottom support member 14c and supporting a chair waist bottom member 15b, a first link portion 21 coupling the chair back bottom support member and the chair knee bottom support member, and a second link portion 22 coupling the chair back bottom support member and the chair leg first bottom support member to each other, the wheelchair forms a bed capable of being changed to a knee lifting posture when being combined with a bed main body portion 10.
