The invention aims to obtain such an elevator that common parts of a car guide rail are used to reduce a counter weight guide rail of the common parts, the number of parts is reduced, and reliability can be easily ensured. To achieve the above purpose, the elevator comprises a car (3) and a counter weight (4) arranged in a lifting channel, slings for hanging the car (3) and the counter weight (4), a driving device (1) for driving the car (3) and the counter weight (4), and the car guide rail (9) for guiding the car (3), wherein the movement amount of the car (3) is twice the movement amount of the counter weight (4), and the counter weight (4) is enabled to move on one part of the car guide rail (9).