The invention discloses a differential mechanism type three-axis rotating table, which comprises a machine seat, a pitching component group and a differential mechanism component group, wherein the differential mechanism component group is matched with the pitching component group to form three rotating axis systems of a pitching axis, a rolling axis and an azimuth axis; the pitching axis uses an independent driving unit to realize the pitching rotation of an upper table top; the rotation of the rolling axis and the azimuth axis is realized through a differential mechanism; the differential mechanism has three bevel gears; the axial lines of the two bevel gears are coincident; the axial line of the third bevel gear is vertical to the public axial line of the two former bevel gears and are respectively engaged with the two former bevel gears; the two coaxial bevel gears are respectively in transmission connection with a driving motor in symmetrical arrangement to realize the composite movement of the two bevel gears, so that the third bevel gear is driven to complete the motion of two freedom degrees; the third bevel gear is connected with the upper table top, so that the rolling of the work table top and the azimuth rotation are realized. The differential mechanism type three-axis rotating table has the characteristics that the structure is compact; the dimension of the rolling axis and the azimuth axis is small; the weight is light, and the like. The differential mechanism type three-axis rotating table is applicable to the field of turning tables.