A heating device and a heating chamber are provided, comprising a base plate (21), at least three supporting columns (22) and a heating assembly, where the at least three supporting columns are arranged vertically on the base plate and are distributed at intervals along a circumferential direction of the base plate Top ends of the at least three supporting columns form a bearing surface for supporting a to-be-heated member (23). The heating assembly includes a heating light tube (24) and a thermal radiation shielding assembly, where the heating light tube is disposed above the base plate and below the bearing surface. A projection of an effective heating area formed by uniform distribution of the heating light tube on the base plate covers a projection of the bearing surface on the base plate. The thermal radiation shielding assembly shields heat radiated by the heating light tube towards surroundings and bottom.