The negative pressure type leak testing equipment consists of a vacuum pump and a negative pressure sensor. Through system control, it can quickly perform uninterrupted negative pressure leak testing on the tested products. It primarily tests the leak tightness and pressure resistance of products. The relevant data during testing can be displayed in digital and curve formats. It features data recording capabilities and product data analysis abilities. The system is easy to operate, and the accessories used are sourced from both imported and well-known domestic brands, ensuring stable and reliable operation.