Throttling tap-water meter

The utility model discloses a throttling running water meter which comprises a body case, a dial plate and the meter cover, a water inlet and a water outlet; wherein, a rotor wing blade wheel, a dosing machine and a set of automatic cut-off equipment are arranged inside the body case. The automatic cut-off equipment comprises a sealed cover that is positioned at the water inlet, and a guide holder that is fixedly connected with the body case. The sealed cover is fixedly connected with a guiding rod that is provided with a pressure spring. The guiding holder is provided with a guiding hole that supports the pass through of the guiding rod. The existing water meter is added with a set of automatic cut-off equipment, so the utility model has the advantages of simpler structure and easier installation and use. Furthermore, due to the application of the pressure spring on the guiding rod, the sealed cover can be automatically pressed tight when the water flow is relatively small to prevent the water from being stolen. Finally, since one end of the water inlet is provided with an automatic cut-off equipment, the reversed water inlet and water outlet installation of the water meter so as to avoid the problem that the water meter is reversely arranged.