The invention discloses a bolt lock and a supporting base thereof. The bolt lock comprises a lock case, wherein a lock cylinder is arranged in the lock case; the right end of the lock case is fixedly provided with a bolt body; the lower end of the lock case is provided with an inclined lock tongue; the lock case is made of a transparent or semitransparent material; an LED light source used for illuminating and a battery are further arranged in the lock case; a switch is arranged on the lock case; and the LED light source is electrically connected with the battery through the switch. The supporting base used for supporting the bolt lock comprises a left base body and a right base body, wherein a horizontal first bolt hole is formed in the left base body; a second bolt hole is formed in the right base body; the first bolt hole comprises a big hole and a small hole, the lock case of the bolt lock can be inserted in the big hole, and the bolt body of the bolt lock can be inserted in the small hole; the second bolt hole is provided with a guide taper hole, and the head part of the bolt body can be inserted in the guide taper hole; and the bolt body of the bolt lock sequentially passes through the big hole and the small hole in the left base body, and then is inserted into the guide taper hole in the right base body until the inclined lock tongue at the lower end of the lock case of the bolt lock is clamped into a clamping slot which is formed in the inner wall of the big hole of the left base body, so that a front wheel of an electric bicycle can be locked.