The invention provides a trace element tracer borehole injection device. The trace element tracer borehole injection device comprises a control module, a high pressure pump, a drive motor, a pressure meter, an overload protection module, a six way valve, a valve, a piston type energy accumulator and a check valve, and further comprises a stirring device, wherein a stirring motor is connected with the stirring device through a stirring shaft, stirring blades are arranged on two sides of the stirring shaft, the stirring blades rotate clockwise along the stirring shaft, and the control module controls running of the stirring motor. The trace element tracer borehole injection device is simple in structure, convenient to operate, convenient to construct and maintain, suitable for injections of trace element tracer in a water injection well, a steam injection well and a gas injection well, short in construction time and high in monitoring success rate, guarantees that trace element tracer is completely dissolved and injected into a stratum on site, can prevent fluid channeling in a well shaft during the layered injection process, saves manpower and material resources, reduces production cost, and improves work efficiency.