The invention discloses a bevel gear with a conical oil storage box. The bevel gear with the conical oil storage box comprises a bevel gear body, wherein a thread connection hole is formed in the top end surface of the bevel gear body. The bevel gear with the conical oil storage box further comprises the conical oil storage box, wherein the conical oil storage box comprises a conical oil storage box body and a connection stud, the conical oil storage box body is of a conical structure and configured to be provided with a large top and a small bottom, and the lower end of the conical oil storage box body is connected with the connection stud; an oil outlet hole is formed in the conical surface of the conical oil storage box body, and the conical oil storage box body is internally held with lubricant oil; and the connection stud is connected with the thread connection hole. The bevel gear with the conical oil storage box has the following advantages: the conical oil storage box is arranged, the oil outlet hole is formed in the conical surface, and the lubricant oil in the oil storage box can be sprinkled towards gear teeth under the action of a centrifugal force, so that a self-lubricant effect is achieved.