The iron stand is a core teaching tool used in chemistry experiment teaching to fix and support experimental instruments. It consists of a base, vertical upright pole, adjustable iron clamp, and iron ring, and is mostly made of cast iron with strong stability. In teaching, it can fix various instruments according to experimental needs: heating test tubes with iron clamps, supporting beakers with iron rings and asbestos nets, or fixing devices such as separating funnels and condenser tubes. Its adjustability allows for flexible assembly of the device and adaptability to various experimental scenarios, making it a fundamental tool for ensuring experimental safety and standardizing operational procedures.