The invention discloses a visualization device for evaluating an oil field working chemical agent. The visualization device comprises corrosion-resistant chemical agent storage devices and reservoir plate models, wherein each corrosion-resistant chemical agent storage device is connected with the corresponding reservoir plate model, the corrosion-resistant chemical agent storage devices and the reservoir plate models are connected to from at least one chemical agent reservoir unit wholly, and a microscope camera information acquisition system is arranged on the side of each reservoir plate model and is connected to a computer information processing system; the at least one chemical agent reservoir unit is arranged in a constant-temperature control system; the corrosion-resistant chemical agent storage devices are connected with a precision metering injection pump, a pressure gauge is arranged on a pipeline where the pump is connected with the corrosion-resistant chemical agent storage devices, and the other end of the precision metering injection pump is connected with a pump fluid container. The phenomenon of reaction of the working chemical agent and oil sand or rock core is recorded by information acquisition and information processing devices such as a camera and the like, so that the principle of interaction is further analyzed and researched, and direct basis and theoretical foundation are provided for use and evaluation of the oil field working chemical agent.