The invention belongs to the technical field of an acid method in-situ uranium mining technology, and particularly relates to a pipeline acid injection and liquid pumping linkage control device. One end of an acid injection pipe is inserted into a liquid injection pipe; the other end of the acid injection pipe is connected with an acid storage tank; an acid injection pump is arranged between the acid injection pipe and the acid storage tank; a one-way valve is installed at the outlet of the acid injection pipe so that concentrated sulfuric acid can only flow to the liquid injection pipe; an electric contact pressure gauge is installed at the upstream of a connecting position of the liquid injection pipe and the acid injection pipe in the fluid direction; a lead wire is led out from the electric contact pressure gauge to be connected to an electric control switch between the acid injection pump and a power supply; and a power failure alarm device is installed between the power supply and the acid injection pump. According to the pipeline acid injection and liquid pumping linkage control device, an acid injection process and a liquid injection process can be linked, the pressure or the flow of the liquid injection pipe is monitored in real time, the power supply of the acid injection pump is cut off when an abnormal condition occurs and a warning message is sent out to remind an operator on duty to dispose in time, so that the occurrence of a safety accident is prevented, thus the response time of accidents is greatly shortened, and the labor production efficiency is improved.