The invention discloses an up-converter module structure, which is characterized in that the up-converter module structure comprises a large cavity, wherein a frequency mixing circuit board cavity isarranged on the front side of the large cavity, a first circuit board cavity for placing a first circuit board and a second circuit board cavity for mounting a second circuit board are arranged on thefront side of the large cavity, and a power supply circuit board cavity is arranged on the back side of the large cavity. The up-converter module structure is simple in structure, reasonable and compact in arrangement, small in space occupation, high in reliability and good in application prospect.