The TD-3700 series high-resolution X-ray diffractometer is a new member of the TD series, equipped with a variety of high-performance detectors such as high-speed one-dimensional array detectors, two-dimensional detectors, SDD detectors, etc. It integrates fast analysis, convenient operation, and user safety. The modular hardware architecture and customized software system achieve a perfect combination, making its failure rate extremely low, anti-interference performance good, and ensuring long-term stable operation of high-voltage power supply.