This pet drinking bottle cap provides a clever solution to the daily drinking difficulties of pets. It is compatible with various specifications of water bottles on the market, whether it is common mineral water bottles or various beverage bottles, it can be easily installed without worrying about compatibility issues. When the water bottle is installed upside down in a specific position on the water bowl, the valve opens precisely, the water flow is smooth, and pets can drink freely at any time. The material is food grade safety material, non-toxic and tasteless, wear-resistant and anti-aging, and it will not release harmful substances after long-term use to ensure the safety of pet drinking water. And its structural design is reasonable, making daily cleaning easy and convenient. It can be easily disassembled to thoroughly clean every corner and maintain hygiene.