Monocular biological microscope is a structurally simple microscopic device that only includes an eyepiece and an optical path. Suitable for beginners, especially younger ones, with easy operation and comprehension. In special application scenarios, such as quick browsing or sample screening, its single eyepiece can provide a faster browsing experience. Its economic viability makes it an ideal choice for schools with limited budgets or individual users with basic observation needs. It is recommended to adjust the focal length and light source correctly during use to ensure clear and accurate observation results. Overall, a monocular microscope is a professional, simple, and economical microscopic device suitable for various basic observation needs.