The embodiment of the invention discloses a pipeline leakage point positioning and repairing device based on a pair-end. The device comprises a mobile platform, a control module, a global image collecting module, an execution module and a local image collection module. The control module is used for receiving an instruction of an operator to control moving of the mobile platform, the global imagecollecting module is used for feeding back preliminary leakage point image information to the operator, the execution module comprises a mechanical arm and a conversion main disc arranged on the mechanical arm, a probe end executor and a twisting leakage stoppage end executor are arranged on the mobile platform, and the local image collection module is fixedly arranged on the probe end executor, and used for observing the real-time condition of the leakage point at close distance. The embodiment of the invention further discloses a method using the device for pipeline leakage point positioningand repairing. Through the device and the method, the method and the device can be applied to pipeline leakage point precise positioning and repairing work under the variable complex environments inthe actual work.