The invention discloses a DDS (Direct Digital Synthesizer)-based transformer vibration monitoring and checking platform, comprising a standard source module, a sensor, a data acquisition module and an upper computer control and data processing module. The output ends of the standard source module and the sensor are connected with the data acquisition module; the output end of the data acquisition module is connected with the upper computer control and data processing module; the output end of the upper computer control and data processing module is connected with the standard source module which comprises a DDS and a signal amplifier circuit; the DDS comprises a phase accumulator, a waveform memory, a digital-to-analogue converter and a low-pass filter. The DDS-based transformer vibration monitoring and checking platform judges whether the vibration monitoring of the transformer is effective by checking vibration signals of the vibration sensor, and has the advantages of simple and reliable structure, easy realization and strong expandability.