The invention belongs to the technical field of machines, and particularly relates to an electric control locking differential mechanism. The electric control locking differential mechanism comprises a differential mechanism outer shell and a differential mechanism cover, wherein an installation cavity is formed in the differential mechanism outer shell; a locking fluted disc is further arranged in the installation cavity and movably engaged with an adjacent half axle gear; the connecting ends of the locking fluted disc and the half axle gear are both provided with end teeth; an elastic resetting device used for enabling the locking fluted disc to get far away from the half axle gear is further arranged between the locking fluted disc and the half axle gear; a limiting post is arranged at the bottom of the locking fluted disc, the differential mechanism is provided with a corresponding limiting hole, and the limiting post penetrates through the limiting hole to be connected with a pushing piece at the outer end of the differential mechanism outer shell; and a magnetic thrust device used for pushing the locking fluted disc to move towards the half axle gear is arranged at the outer end of the pushing piece. The electric control locking differential mechanism is simple in structure and convenient to use, and effectively overcomes the phenomenon that a car is prone to slipping due to lack of adhesion force when meeting muddy or bad road surfaces.