The invention discloses a mould with a sliding block resetting needle. The mould comprises an upper ejector needle board, a lower ejector needle board, a sliding block and a sliding block base, wherein ejector needles are fixed on the upper ejector needle board and the lower ejector needle board, and are abutted against the bottom face of the sliding block; one end of the sliding block is abutted against the sliding block base; a vertical rod-like sliding block resetting needle is further fixed on the upper ejector needle board and the lower ejector needle board; a needle hole adaptive to the sliding block resetting needle is formed in the sliding block base; the sliding block base is drawn back in a mould opening process; and the impact by the sliding block when the ejector needle is not reset can be avoided by inserting the sliding block resetting needle into the needle hole. The mould with the sliding block resetting needle provided by the invention is provided with the sliding block resetting needle for preventing the impact caused by the sliding block and the ejector needle, so as to form a forced ejector needle resetting mechanism. The sliding block resetting needle has the advantages of rapidness in machining and mounting, convenience in adjustment and strong reliability. Therefore, the possibility of the damage of the mould caused by colliding between workpieces, such as the sliding block, and the ejector mechanisms is nearly zero.