The invention discloses an elevator car door lock opening device and an elevator. The elevator car door lock opening device comprises a door knife base, a pushing rod, a guiding rail, springs, a first limiting wheel and a second limiting wheel. One end of the guiding rail is connected to the pushing rod, the first limiting wheel and the second limiting wheel are both installed on the door knife base, the first limiting wheel and the second limiting wheel abut against the two sides of the guiding rail respectively, one end of the springs are connected with the base, and the other ends of the springs are connected with the pushing rod. A landing door is broken apart through a little strength, the springs are compressed under the action of landing door static idler wheels, the pushing rod continues moving for a certain distance to enable the landing door to have certain moving space, so that the landing door can continue to be opened for a certain distance, the opened gap of the landing door is increased much larger, the travel difference of the landing door and the elevator car is increased a lot, enough space is formed to bring convenience to entering of hands, an unlocking device is operated, and the elevator car door is opened finally; compared with an ordinary elevator, the elevator has the advantages that the time of opening the elevator car door outside the landing door is shortened, and the successful rate of opening the elevator car door is improved.