The invention relates to the technical field of drilling, in particular to a downhole vibration generation nipple which generates vibration in a drilling process. The downhole vibration generation nipple comprises an upper connecting segment cylinder, a middle cylinder and a lower connecting segment cylinder, and channels are formed between the upper connecting segment cylinder, the middle cylinder and the lower connecting segment cylinder; a small spring is arranged in the upper connecting segment cylinder, wherein one end of the small spring is free, and the other end of the small spring is fixed; the nipple further comprises a check valve and a flow plug, and the flow plug penetrates out from the small spring; a big spring and a vibration block are arranged in the middle cylinder, and a through inner flow channel is formed in the vibration block; the vibration block is divided into three segments, the vibration block is sleeved with the big spring, one end of the big spring is free and connected with the second segment of the vibration block, and the other end of the big spring is fixed; a shoulder is arranged on the inner wall of the upper connecting segment cylinder and matched with the joint between the first segment and the second segment of the vibration block. According to the nipple, the structure is simple, use is convenient, the flow rate in a drill string is adjusted according to the demands to generate continuous vibration, and the nipple is widely applied to friction and resistance reduction of positions with large inclination through vibration in the sliding drilling process.