The invention belongs to the field of coal mining, and provides a quantitative determination method of ascending mining feasibility of a composite residual mining area. The method comprises the following steps: S1, judging an upper residual coal position, carrying out step S2 if the same is located above a caving zone of lower coal seam mining, and otherwise, determining that mining cannot be carried out; S2, obtaining stratum composition, stratum structures and physical and mechanical stratum parameters of a residual coal mining area through drilling; S3, determining positions of control strata forming bottom plate voussoir beam stratum structures; S4, calculating intervals of roofing breaking of the control strata and the size of a disturbance load acting on the bottom plate voussoir beam stratum structures; and S5, analyzing whether rotary deformation instability of the bottom plate voussoir beam stratum structures of the composite residual mining area occurs under the action of thedisturbance load, and determining that mining can be carried out if the rotary deformation instability of the bottom plate voussoir beam stratum structures does not occur. The method improves accuracy of mining admissibility determination and safety of mining, and is suitable for use in conditions that the control strata are hard and the voussoir beam structures are formed.