The embodiment of the invention discloses video signal transmission equipment, a playing system and a video signal transmission method, and relates to the field of displaying. According to the video signal transmission equipment, the playing system and the video signal transmission method, plug and play can be achieved, and the problem that output can not be achieved or display configuration is disordered and a system needs to be rebooted due to hot plugging of the system or due to the fact that the system is not connected with display equipment can be solved. The video signal transmission equipment comprises a first interface used for being connected with a video signal source, a second interface used for being connected with the display equipment, a signal receiving unit and a control unit, wherein the signal receiving unit and the control unit are arranged between the first interface and the second interface, the control unit is connected with the display equipment through the second interface, and the signal receiving unit is connected with the video signal source through the first interface. The control unit comprises an acquiring module used for acquiring the parameter information of the display equipment and feeding back the parameter information to the signal receiving unit, and the parameter information comprises the video format supported by the display equipment. The signal receiving unit comprises a conversion module used for converting the received video signals into the video format supported by the display equipment according to the parameter information.