The invention provides a connecting rod type bicycle anti-theft lock, and belongs to the technical field of locks. The connecting rod type bicycle anti-theft lock comprises a double-connecting mechanism which can link; in a non-working state, connecting rods are hidden in a groove; when the connecting rods are required to be used, a second rotating shaft is pulled and placed at the inclined upperpart of a tire; in a rotating process, a limiting pin of the second rotating shaft slides in a chute of a first rod body and drives the first rod body to rotate out from a first groove; at the moment,the straight-line distance between the contact point of the first rod body and the tire and the contact point between a second rod body and the tire is smaller than the diameter of the tire; and in the state, the tire cannot be separated from a frame consisting of the first rod body and the second rod body. Meanwhile, a forward ratchet piece is mounted on the side surface of a first connecting rod; a second connecting rod is connected with a connecting rod lock; and in the relative rotating process of the first connecting rod and the second connecting rod, a ratchet part on the first connecting rod enters the connecting rod lock and is locked.