The invention relates to an interface method between signal source and player, and a relative device, wherein it sets the signal source device as the inserter with uniform standard; at one end of inserter, arranging the inserter connected to the circuit of signal source inside the frame; at the frame of voice/video player, arranging the plug of inserter; in each plug, arranging the connector meshed with the inserter of signal source; and the circuit connection between said inserter and player at least comprises: HDMI wire, power wire, sound signal wire, image signal wire, serial communication wire and frame shield wire, to power the signal source inserted on the inserter powered by player and communicate with player. The invention can realize best play effect of digit TV, with better expanding property. |