Abstract: Abstract： There are specializations in the design of water supply and drainage of coal industry. The 《Code for design of water supply and drainage of coal industry》 has taken an important role in designing of coal industry. It has improved the design greatly. In this paper discuss two kinds of questions, one is domestic and industrial water supply, the other is fire water supply in the design of coal industry. According to the design process, this paper will analyze something to improve it, and give some suggestions and measures to solve these problems. At last, this paper will list some contents to add in this code of coal industry.

Key words: Key words: code of coal industry, domestic and industrial water supply, fire water supply