An intelligent lock for a shared bicycle comprises a shell, a lock body, a power source and a control main board. A first through groove and a second through groove are formed in the front face of the shell. A movable sealing plate is transversely arranged in the first through groove. The shell is internally provided with a first drive piece used for driving the sealing plate to move back and forth in the transverse direction. A light transmitting plate is embedded in the notch position of the second through groove in a sealing manner. A first code scanning module is arranged on the inner side of the second through groove. A first coiling block, a second coiling block, a guiding barrel, a second drive piece and a third drive piece are further arranged in the shell, wherein the second drive piece and the third drive piece are used for driving the first coiling block and the second coiling block to rotate. A base belt is wound around the first coiling block, and one end of the base belt winds around the guiding barrel and is fixed to the second coiling block. A plurality of two-dimension codes are printed on the base belt in the length direction of the base belt at intervals. The shell is internally further provided with an image obtaining module. An operation button is arranged on the front face of the shell. By means of the intelligent lock, illegal people can be prevented from covering illegal two-dimension code labels on original two-dimension codes to a certain degree.