1. A counting device for distance measuring wheel, comprising:a housing, having a top surface, a bottom surface, two side surfaces, a resetting surface, and a linking surface, the top surface has a measuring window, the bottom surface is corresponding to and parallel to the top surface, the two side surfaces are respectively connected to two sides of each of the top surface and the bottom surface, the resetting surface is connected with the top surface, the bottom surface, and the two side surfaces, the resetting surface has a fixing hole, a notch, and a first sliding slot, the notch is arranged toward the top surface, the first sliding slot is arranged toward one of the two side surfaces, the linking surface is opposite to the resetting surface and connected to the top surface, the bottom surface, and the two side surfaces, the linking surface has a through hole and a second sliding slot, the second sliding slot is corresponding to the first sliding slot;
a transmission assembly, having a first shaft, a driving wheel, a second shaft, and a plurality of transmission wheels, the first shaft is arranged in the through hole of the linking surface and the fixing hole of the resetting surface, one end of the first shaft is protruded from the through hole, the driving wheel is fastened to the first shaft and rotated with the first shaft, the second shaft is elastically reset and slidably arranged in the first sliding slot of the resetting surface and the second sliding slot of the linking surface, the transmission wheels are respectively pivoted on the second shaft, and one of the transmission wheels is engaged with the driving wheel;
a counter wheel assembly, disposed in the housing and toward the measuring window, the counter wheel assembly has a plurality of counter wheels, the counter wheels are respectively pivoted on the first shaft, and each of the counter wheels is engaged with each of the transmission wheel; and
a reset control assembly, having an elastic support unit, a push unit, and a dial unit, the elastic support unit is arranged at one of the two side surfaces and supports the second shaft, the push unit is movably arranged at the notch of the resetting surface and abutted against the second shaft, and the dial unit is arranged on the second shaft.