Wet alarm convenient to install

A wet-type alarm convenient to install disclosed by the present invention comprises a wet-type alarm main body, the bottom of the wet-type alarm main body is provided with a first connecting part connected with a water supply end, the water supply end is integrally provided with a second connecting part matched with the first connecting part, the outer wall of the first connecting part is integrally provided with a first limiting ring, and the outer wall of the second connecting part is provided with a second limiting ring. A first limiting ring is integrally formed on the outer wall of the first connecting part, first protrusions are evenly distributed on the first limiting ring, a first groove is formed between every two adjacent first protrusions, a second limiting ring is integrally formed on the outer wall of the second connecting part, second protrusions are integrally formed on the inner wall of the second limiting ring, and the second protrusions are matched with the first grooves; a first gap is form