A kind of Pet rope puller includes a shell, a brake unit, a driving unit, a clip unit and locating unit. The drawstring and a spring element that there is the brake unit axis to be located at the braked wheel in the shell, a connection what braked wheel, the braked wheel is equipped with most unidirectional latches, clip unit generation swing can be interlocked by operating the driving unit, and a pawl portion is made to generate blocking towards any unidirectional latch, operating the positioning unit again can make a blocking end inlay card on one of clip unit positioning region, and the pawl portion can be made with respect to what, and the unidirectional latch keeps blocking. Thereby, it can reach the purpose for being easy to control rope stretching and rope closing.一種寵物拉繩器，包含一殼體、一制動單元、一驅動單元、一卡掣單元及一定位單元。該制動單元具有一軸設在該殼體中的制動輪、一連結於該制動輪的拉繩及一彈力件，該制動輪環設有多數單向卡齒，操作該驅動單元可連動該卡掣單元產生旋擺，且使一掣爪部朝任一單向卡齒產生卡制，再操作該定位單元可使一卡制端部嵌卡在該卡掣單元之一定位部上，可使該掣爪部相對於該單向卡齒保持卡制。藉此，可達到容易控制出繩及收繩之目的。
