The invention discloses a method for manufacturing a frequency band front-stage amplifier module, which comprises the following steps of: 1, respectively sintering a front-stage microwave board and aradio-frequency insulator with a cavity to obtain a component A; 2, sintering elements and a feed insulator on the component A to obtain a component B; 3, respectively welding the elements in the component B; 4, manufacturing a plurality of eutectic assemblies and baffle assemblies; 5, installing a circulator U1, the plurality of eutectic assemblies and the baffle assemblies into the cavity; 6, sealing the cover plate on the cavity for sealing. The product manufacturing process of the frequency band front-stage amplifier module manufacturing method is more scientific and practical.