Seed crystal dissolving method and device for growing cadmium zinc telluride crystal based on THM

The invention relates to a seed crystal dissolving method and device for growing a cadmium zinc telluride crystal based on THM, and the device comprises a growth crucible, a heat insulation bracket for placing the growth crucible, a SiC heat conduction rod arranged at the bottom of the growth crucible, and a thermocouple for monitoring the temperature of the seed crystal of the cadmium zinc telluride single crystal, the seed crystal dissolving method comprises the following steps: S1, pretreating a tellurium-zinc-cadmium single crystal seed crystal and a first tellurium-zinc-cadmium polycrystal (false seed crystal), sequentially placing the first tellurium-zinc-cadmium polycrystal, the tellurium-zinc-cadmium single crystal seed crystal, a tellurium-rich solvent region material and a third tellurium-zinc-cadmium polycrystal from bottom to top, and carrying out vacuumizing, heating and heat preservation; s2, a heater is moved downwards to heat and dissolve part of components of the tellurium-zinc-cadmium single