The invention discloses an emergency forced-drainage lifting system for vertical shaft and a lifting method thereof. The lifting system comprises a lower balance system and an upper lifting system, wherein the balance system comprises an upper suspending inverted triangle shaped balance plate, a balance box, a lower suspending equilateral triangle shaped connecting plate and a pipeline connectingplate, wherein the lifting system comprises a derrick platform, two groups of pulley systems and four sinking hoists, the two sinking hoists at the same side in the horizontal direction correspond toone group of pulley systems, and the rest two of sinking hoists correspond to the other group of pulley systems. The emergency forced-drainage lifting system effectively solves the problem that stresson the system in a lifting process in the prior art is unbalanced and greatly improves safety through a balance lug plate, the balance box and a lower suspending three-star plate balance component, also solves the problem of arranging the lifting system in the existing space, improves dropping efficiency, and gains time for mine emergency and water-drainage.