An electrical connector comprises a housing, an electrical connection assembly received in the housing, and a locking mechanism mounted on an outer surface of the housing and configured to releasably lock the electrical connector and a mating electrical connector together. The locking mechanism includes a handle, a locking member adapted to be engaged with a locking structure on the mating electrical connector, the locking member connected to the handle such that the mating electrical connector is unlocked when the handle is pulled, and a fixing member mounted on the outer surface of the housing and adapted to position the locking member and the handle between the fixing member and the housing.