This utility model discloses an interactive digital TV front end high-definition video interface device, including a wireless receiving module, a signal processing module and a signal interface module. The wireless receiving module receives a radio frequency signal loaded with video/audio frequency business. The signal processing module processes TDS-OFDM demodulation, decoding and synchronous process to the radio frequency signal received by the wireless receiving module to acquire a video/audio frequency signal and output the video/audio frequency. The signal interface module receives the video/audio signal output by the signal processing module. The interactive device is capable of reliably receiving and processing the radio frequency signal to acquire the video/audio signal with high quality. The device has high integration level, small convergence error and short convergence time.