It is provided with a kind of new dog leash, including housing, line wheel, shift knob, driving member and braking plectrum, the housing in accommodation space, accommodation space and is provided with shaft core, line wheel is arranged with shaft core;The retarder location corresponding with braking plectrum is interval with line wheel;Braking plectrum is articulated in housing, brakes affixed first spring one end of pivot end of plectrum, and the other end of the first spring is moved with the free end of driving member and contacted;Driving member is articulated in housing, affixed second spring one end of pivot end of driving member, and the other end of second spring is moved with the free end of braking plectrum to be contacted;The pivot end of driving member is engaged with shift knob, and shift knob is stretched out outside housing.The beneficial effects of the invention are as follows:It is engaged as a result of above-mentioned structure design, i.e. shift knob with driving member, braking plectrum, realizes the function that pause or lock-in line wheel are rotated, braking reliability is high.
