The invention belongs to the technical field of electric cookers and particularly relates to a control method of an electric cooker and the electric cooker. The control method of the electric cooker comprises the steps that the ion concentration of water in the electric cooker is detected; control parameters of the electric cooker in the cooking process are adjusted according to the ion concentration of the water; and then cooking is carried out according to the adjusted control parameters, so that the electric cooker can adapt to more working conditions, rice with the optimal effect is cooked, and the user experience is improved.