Electrochemical technology can effectively eliminate harmful chloride ions of concrete structures and reduce the failure risk of durability of concrete structures. In this paper, the electrochemical dechlorination of concrete structure is carried out by means of strong electric field, and the strong electric field is involved in different curing periods of concrete, in order to explore the purpose of greatly reducing the concentration of chloride ion in a short time. The results show that the chlorine removal efficiency can be significantly improved by the intervention of strong electric field at early age, and the working time is about 1/300 of the traditional electrochemical methods when reaching the same chlorine removal effect. The distribution characteristics of chloride ions show that the distribution of free chloride ions is more uniform than that of traditional electrochemical parameters, and the binding chloride ions still have the phenomenon of accumulation in the middle of the protective layer. The standard curing is carried out after the action of strong electric field, and the rebound test results show that the strong electric field has no obvious effect on the macroscopic strength of concrete protective layer. The research results of this paper provide a rapid chlorine reduction method for early detection and treatment of concrete structures with excessive chloride concentration during construction.