To solve the problem of inhomogeneous distribution of Kang′s surface temperature and poor indoor thermal comfort, this paper proposes a method to incline the Kang board. By the numerical simulation of grounded Kang and elevated Kang with different oblique degree of Kang board, it is found that when the claypan thickness at the head/end of the Kang is 80/20 mm, the Kang has the best heating effect.