Calcium silicate board convenient to splice

The utility model discloses a calcium silicate board convenient to splice, which comprises board bodies, the right side wall of each board body is fixedly connected with two fixing boards, a clamping groove is formed between the two fixing boards, the left side wall of each board body is fixedly connected with a clamping board, and the clamping board of one board body is inserted into the clamping groove of the other board body. At the moment, the clamping grooves are filled with the clamping plates, the two fixing plates abut against the other plate body, the two upward ends of the two plate bodies are kept flush, then fixing is completed by inserting bolts into the first screw holes and the second screw holes, splicing is easy and convenient, the splicing strength is high, the damp-proof layer is made of EVA, the good waterproof and damp-proof performance is achieved, and therefore the overall damp-proof performance of the plate bodies is improved; the sound attenuation layer is made of sound attenuation co