The utility model provides a rib wall caving anchor, stock include bower anchor pole, elasticity connecting plate and stock locking head, and the setting of elasticity connecting plate slope is on the lateral wall of bower anchor pole, and the outer end of elasticity connecting plate orientation drilling sets up, and the outer end of bower anchor pole is provided with stock locking head, is provided with the wall caving protecting wire net between the lateral wall in stock locking head and coal seam, the wall caving protecting wire net and be provided with the separation blade between the stock locking head, the elasticity connecting plate includes root and shell fragment portion, wherein, the one end of root with the lateral wall welded connection of bower anchor pole, the one end integrated into one piece of the other end of root and elasticity portion is connected, and the setting is hugged closely on the drilling inner wall to the other end of elasticity portion. The utility model discloses a with stock setting give first place to stock and elasticity connecting plate, can effectually prevent the not hard up of stock, at coal seam exploitation in -process, cut the stock according to the degree of depth of mining very easily, and cut the in -process, because about the fastening of elasticity connecting plate and bounce -back, the will not influences the fastening of stock.