A stepless speed regulating control mechanism for a mower, which comprises a push handle, a self-propelled lever, a speed regulating cable and a regulating mechanism; the mower has a base and a self-propelled device; the regulating mechanism comprises a regulating sleeve and a speed regulating sleeve; the self-propelled lever pulls the regulating sleeve and causes the speed regulating sleeve to move simultaneously with the regulating sleeve, so as to pull the speed regulating cable, and the speed regulating sleeve can move relative to the regulating sleeve, so as to pull the speed regulating cable. The stepless speed regulating control mechanism of a mower is not only convenient for speed regulation and for stepless speed regulation, but also reasonable in design and convenient for speed regulation operation without causing confusion and misoperation. Besides, the stepless speed regulating control mechanism is low in cost, and easy to manufacture and operate.
