The antiadsorption membrane of electrode was first proposed by us and it was completed in 1977.The adsorption on the surface of solid electrode can be prevented successfully.The characteristics of antiadsorption electrode were also studied.The antiadsorption membrane consists of a net structure of alginic acid or calcium alginate.The method of preparation is as follows: Put the electrode in 1.0% sodium alginate, take out slowly and put it gently in a 0.10N HCl or saturated calcium chloride solution for about half a minute, and.take out again.A colorless transparent alginic acid or calcium alginate membrane is formed on the electrode.The alginic acid membrane is useful in acidic solution, and the calcium alginate membrane is useful in alkaline solution.