The invention provides a lever and a lever lock with the lever. The lever comprises a seat body, a limiting boss, a lever grip and a cog wheel, wherein a mounting hole is formed in the seat body in a penetrating manner, and the mounting hole comprises a first step hole and a second step hole; the lever grip is mounted on the seat body in a locking position or an opening position in a rotatable manner; the cog wheel comprises a connecting part, a transmission part and a limiting part; the connecting part is fixedly connected with the lever grip, and at least part of the limiting boss projects and blocks part of the second step hole, forming an incoming and outgoing opening for going in/out of the second step hole; when the limiting part is matched with the incoming and outgoing opening, the limiting part is detachably assembled in the second step hole; and when the limiting part is staggered from the incoming and outgoing opening, part of the limiting part rotates and is clamped between the limiting boss and the step. According to the lever and the lever lock, when the cog wheel is mounted, the cog wheel goes in/out of the second step hole in a detachable manner; and in the transmission process, the limiting part rotates with the lever grip, part of the limiting part can be clamped between the limiting boss and the step, the axial limiting of the cog wheel is realized, and the cog wheel is prevented from falling off the lever seat.