portable device for testing screen end product

The invention provides a portable device for testing a screen end product, which is used for testing the performance of the screen end product between an upper computer and the screen end product andcomprises an MCU (Microprogrammed Control Unit) and a code transmission sequencer which are connected with each other, wherein the MCU is further connected with the upper computer and used for obtaining a current performance test instruction sent by the upper computer and issuing a control instruction to the code transmission sequencer through the integrated circuit bus IIC; wherein the performance test instruction is one of audio and video display, IIC unvarnished transmission communication, IO unvarnished transmission and CRQ unvarnished transmission performance test instructions; and the code transmission sequencer is also connected with the upper computer and the screen end product and is used for selecting a corresponding function channel to open according to the control instruction so as to test the performa