The invention relates to the technical field of automobile transmission parts, in particular to a central cycloidal differential. The central cycloidal differential is composed of a planet carrier, atleast two type-A planetary gears of which the corresponding ends are provided with crankshafts, at least one type-A swinging gear, an output gear A and an output gear B; the rotation axis of each type-A planetary gear is fixed to the planet carrier, and the rotation axis line of each type-A planetary gear is parallel to that of the planet carrier; the shaft neck axis lines of same-level cranks ofthe crankshafts of the type-A planetary gears are parallel to the rotation axis lines of the gears, and the distances from the shaft neck axis lines of the same-level cranks of the crankshafts of thetype-A planetary gears to the rotation axis lines of the gears are same; the crankshaft phase positions of all the type-A planetary gears are same; shaft necks of the same-level cranks of the type-Aplanetary gears penetrate through shaft holes formed in the same type-A swinging gear separately; a rotation shaft of the output gear A is coaxial with a rotation shaft of the planet carrier; the output gear A meshes with the type-A swinging gears simultaneously and separately to form inner gear pairs; and the tooth numbers of all the type-A swinging gears are equal.