The utility model provides an opening and closing wrench for valve, including the handle with set up the dop at the handle tip, be provided with the draw -in groove on the dop, the notch department ofdraw -in groove is provided with to the bellied spacing portion in notch inside, the width of the notch of draw -in groove is at the within range of 48mm to 52mm, the internal width of draw -in groove is at the within range of 60mm to 65mm. The utility model discloses an opening and closing wrench for valve can accomplish the adjustment of the switch of multiple model valve or flow, but also canhelp the operator to handle some conventional problems, and application scope is wide, the availability factor is high, safe and reliable, simple structure, handling ease preparation, and the cost isvery low.