The electronic lock for bicycle renting garage is composed of a support (1), a bracket (2), a cable (3), a socket (4) accompanied with the chip, an electronic lock (5) and a card machine (9), characterized in that: the electronic lock (5) on the support (1) is fixed with the front wheel of a bicycle (6). The cable (3) is inserted into the socket (4), the socket of the bicycle handle is accompanied with the chip, and the card machine (9) is connected with the socket (4) and the electronic lock (5) through the cable (7, 8). The electronic lock composed of an electric machine (10), a switch (14), a circuit board (15) is arranged on the support of the electric machine (21); the motor shaft is accompanied with a key which is inserted into a lock core (19), a sensor (16) ensures a lock sub (12) opened and locked, and then the electric machine is stalled; when the bicycle renter rents the bicycle, the selected bicycle model and bicycle position number are inserted into the card machine, and then the card is clipped; the card machine instructs the electric machine (10) to rotate forward, the lock sub (12) is opened, the cable (3) is extracted from the socket (4) which is accompanied with the chip, and timing and charging are started; when the bicycle renter returns the bicycle, the * sign parking space is prompted through clipping the card, and renting the bicycle is charged; when the front wheel is pressed on a cover plate (11), the switch (14) is on, the electric machine (10) is reversed, and the front wheel of the bicycle is locked.