Water heating sensor with protection function

The utility model provides a water heating sensor with a protection function. The water heating sensor comprises a water heating sensor and a protection mechanism, the surface of one side of the water heating sensor is fixedly connected with a water inlet pipe; the protection mechanism is characterized in that the protection mechanism comprises a protection sleeve, and the protection sleeve is fixedly connected with the surface of one side of the water heating sensor. According to the water heating sensor with the protection function, through the arrangement of the protection sleeve, the sliding groove, the protection pipe, a baffle, a threaded sleeve and a limiting groove, after a water inlet pipe is connected with a water pipe, the baffle is pulled to pull out the protection pipe, the protection pipe is arranged on the outer side of the water pipe in a sleeving mode, and meanwhile the threaded sleeve is driven to slide in the limiting groove; and threads are formed in the inner side surfaces of the limiting