The invention relates to a high-heat-density high-power solid-state emission module radiating device. According to the radiating device, heat sink plates with high thermal conductivity are used to disperse the heat density, then, the heat is transferred to a radiator and an air duct by a heat pipe, and finally, the heat is discharged by a high-power fan. Modules in different bands are installed on different radiating plates, a common air duct is formed at the radiating teeth, the heat of the radiating teeth is conducted, and therefore, the radiating efficiency of the radiator when the modules work in a time-sharing mode is increased. Temperature control plates are added in the corresponding portions of the heat sink plates to realize thermal production during work of the modules.