Proper cleaning and storage of culture dishes are crucial in biological laboratories. Careful cleaning before each experiment not only ensures the healthy growth of the culture medium and cells, but also avoids cross contamination and maintains the purity of the experimental environment. After using the petri dish, it should first be cleaned with deionized water, disinfected for at least 10-15 minutes, and then dried with sterile materials before being properly stored in the incubator until the next use. These steps ensure that the culture dish can still function effectively in the next use, providing solid support for scientific research. Meanwhile, proper cleaning and storage can also extend the service life of the culture dish and save costs. Properly handling culture dishes can not only improve laboratory efficiency, but also enhance the credibility and reliability of experimental results. Therefore, in daily use, experimenters should strictly follow the standard operation.