A joined body 10 includes a ceramic body 12, a metal member 14, and a joint portion 15 that joins the ceramic body 12 and the metal member 14 together. The joint portion 15 includes a first joint layer 16 joined to the ceramic body 12 and a second joint layer 18 joined to the metal member 14. The first joint layer 16 is disposed on the ceramic body 12 side and contains an alloy that contains Fe and Cr as main components, and a compound having a thermal expansion coefficient of 4.0×10−6 (/° C.) or lower is dispersed in the first joint layer 16. The second joint layer 18 is disposed on the metal member 14 side, contains an alloy that contains Fe and Cr as main components, and has a larger thermal expansion coefficient than the first joint layer 16.