A power socket terminal is provided, comprising a base plate, a pair of asymmetric elastic arms and a receiving space defined by the base plate and the pair of the elastic arm. First contact portions of the pair of the elastic arms are located at the same level, and second contact portions thereof are staggered in a vertical direction. Some second contact portions are higher than the first contact portions, and other second contact portions are lower than the first contact portions. Using this design, when the plug is inserted into and mated with the power socket terminal of the present invention, the plug will be subjected to balance forces and be kept in a correct insertion state for forming a normal power circuit. Therefore, the power socket terminal of the present invention has the characteristics of high security, good electric property and reliable connection.