The integral component has the advantages of special structure, high strength, small volume, which greatly simplifies the parts assembly and improves the efficiency.It is widely used in aerospace and other manufacturing areas, but it has high hardness and complex cavity, the machining processing is difficult even tool cannot reach the processing area.Electrochemical machining has high productivity, can be a molding and suitable for processing complex cavity part particularly.According to the characteristics of the integral component, the design of electrochemical machining device can ensure the insulation of the processing parts, conductive and clamping. By the test of product parts processing, the electrochemical machining process sealing problems and cavity position deviation were discussed.The experimental results show that the new reasonable design of these fixture can satisfy the whole process of parts processing, avoid corrosion of the lathe and ensure the location and size of products.