The use of linear guide in machine tools is to guide and support the role. This role can be said to be very important in production, not only to improve the efficiency of production, the key is to have a great guarantee of product quality. Linear guide rust phenomenon, it is inevitable to encounter. Especially in hot summer like now, direct contact with the linear guide rail after the operator's hands are sweaty may also lead to rust of the guide rail. How should we try to avoid the surface rust of linear guide in daily use? In this article, we'll go into more detail and tell you how to solve it.