The invention provides a system for realizing automatic control of a lithium washing process by using a conductivity meter. The system includes a conductivity meter which is installed on an outlet pipeline of a lithium ion adsorption tower for detecting the conductivity of lithium eluate in the lithium ion adsorption tower. The system for realizing automatic control of a lithium washing process byusing a conductivity meter improves the detection accuracy and the production efficiency, overcomes the trouble of laboratory analysis for each step and the waste of time, and reduces the loss of lithium ions after using automatic detection of the conductivity meter. The system for realizing automatic control of a lithium washing process by using a conductivity meter adopts a distributed controlsystem DCS, remotely controls the opening/closing of a valve in the lithium washing process according to the data displayed by the conductivity meter, improves the automation degree of the lithium washing process, and realizes large-scale automatic production. The system for realizing automatic control of a lithium washing process by using a conductivity meter can be operated stably for a long time, has high automation level, is simple in operation, has high safety and has certain economic benefits.