Abstract: A hand-controlled accelerator for automobiles including an inner tubular member formed with a spiral projection on an outer surface thereof and an enlarged base at a lower end thereof, an accelerating cable having an upper end fastened in the base, a brake cable having an upper end fastened in the base, an intermediate tubular member in which is fitted the inner tubular member, a handle having a tubular neck at a lower portion thereof, an outer tubular member in which is fitted the intermediate tubular, and an annular ring-like member having two opposite threaded holes in each of which is arranged a steel ball, a spring having an end bearing against the steel ball, and a screw bearing against another end of the spring, whereby the hand-controlled accelerator for automobiles can prevent the driver from mistakenly depressing the accelerator pedal when desired to apply brake.