A pair of pipe cutting pincers includes a pincers body having a first handle and a second handle pivotally assembled together. The first handle has its front end pivotally combined with a pipe-cutting member disposed with a cutting blade and its rear end bent toward a second receiving groove to form a pivotally driven member. An elastic member positioned between the first and the second handle has one end hooked on the first handle and the other end hooked with the rear end of the pivotally driven member for pulling the pipe-cutting member to carry out reciprocating shifting. A pivotal actuating member is rotatably assembled in the second handle to resist against the lower end of the pivotally driven member. In using, the pivotally driven member is actuated by the elastic member to move and make the pivotal actuating member rotate and drive a cutting edge to cut off a pipe.