The utility model relates to a portable 220kV line temporary protection device. The device comprises a box and a circuit board. The circuit board is specifically composed of an alternating-current module, a switching value input module, a CPU protection module, a power supply module, a man-machine interaction module, a relay outlet module and a communication interface module. The alternating-current module and the switching value input module are connected with input terminals of the CPU protection module, and output terminals of the CPU protection module are connected with the man-machine interaction module, the relay outlet module and the communication interface module. The power supply supplies power for the above modules. The portable 220kV line temporary protection device provided by the utility model has the independent functions of charging protection, over-current protection, information recoding and analysis, fault wave recording and the like, and is suitable to provide temporary protection for lines having a voltage level of 220kV or less, mainly provide additional temporary protection when a new 220kV line is put into operation.