Fixed-point temperate plateau technique based standard blackbody radiation source

The invention discloses a fixed-point temperate plateau technique based standard blackbody radiation source, which comprises a shell, wherein a temperature control flow passage inlet penetrates into the shell, and is connected with a helical heating pipeline; the helical heating pipeline is wound around a fixed-point crucible, and is communicated with a temperature control flow passage outlet; thetemperature control flow passage outlet penetrates through the shell; temperature control liquid flows in from the temperature control flow passage inlet, and flows out from the temperature control flow passage outlet after passing through the helical heating pipeline; thus, the temperature of an overall device is controlled; the interior of the fixed-point crucible is made from high-purity gallium metal; a cavity is enclosed by the high-purity gallium metal; a rear temperature compensator is also arranged inside the shell, and is connected with a uniform temperature block; the uniform temperature block is connected