The utility model relates to a full-function digital intermediate frequency processing platform, which comprises an AGC amplifier, an A/D conversion module, a D/A conversion module, a power amplifier,a numerical control attenuator, a filter module, an FPGA module, an external input interface and an external output interface which are arranged on a carrier plate. The platform comprises a pluralityof identical and independent analog signal input channels, and each analog signal input channel is formed by sequentially connecting an external input interface, a filter module, an AGC amplifier andan A/D conversion module. The analog signal output module comprises a plurality of identical and independent analog signal output channels, and each analog signal output channel is formed by sequentially connecting a D/A conversion module, a band limiting filter and a programmable attenuator; in conclusion, various external data interfaces are adopted, various processing rate requirements can bemet, modulation and demodulation integrated design is achieved, and high compatibility, configurability and expandability are achieved.