Dry type transformers, as an efficient and safe power conversion device, are widely used in modern power systems. Its core feature is the oil-free design, which avoids many problems caused by oil immersion, such as fires, environmental pollution, etc. It adopts advanced insulation technology and materials, with good heat dissipation performance, ensuring the long-term stable operation of the equipment. In addition, dry-type transformers have a small footprint, are easy to install, and have low maintenance costs. Suitable for various scenarios, such as industrial, commercial, and residential areas. Keywords: dry-type transformer, high efficiency, safety, oil-free design, stable operation. Its efficient power conversion capability provides a solid guarantee for the electricity demand of modern society.