For laser equipment maintenance, pay attention to cleaning the lens, guide rail and sundries on the workbench every day; Cleaning method of lens: absolute ethanol or 98% alcohol must be used as the cleaning solution when cleaning the lens, a small amount of absorbent cotton dipped in alcohol shall be used to gently scrub the lens directionally, and finally dry cotton shall be used to gently scrub the lens to make the lens bright and transparent; (It should be noted that too much scrubbing will easily wipe off the coating on the lens, so as to damage the lens) Cleaning method of guide rail: first remove the stains and processing debris on the guide rail, then add a little clean lubricating oil on the guide rail, and move the guide rail so that the clean lubricating oil can be evenly distributed on the guide rail. (Be careful not to attach thick lubricating oil (butter) to the guide rail, which will easily cause the sticking and twisting of processing debris and dust, so as to damage the sliding block and guide rail); Cleaning method of working platform: the working platform includes zinc iron alloy, honeycomb, caterpillar, knife bar and other workbenches. First, clean the processing scraps on the workbenches. The caterpillar workbenches need to add a bit of clear antirust oil on the caterpillar for half a year, and do some antirust treatment. Other workbenches do not need it. (Note that the working platform can not be easily cleaned with water, which may lead to rust on the working platform and speed up work oxidation.)