The current used biocides in China in the industrial fields are the ones which were used since 20th century. Due to the deterioration of the global environment, people are more conscious of the protection of the environment, forcing the governments to be stricter in the field of water treatment. Therefore, the development of biocides is an irreversible trend. In the future, the market for biocides will be enormous. Prospective biocides will be green, low toxicity, effective and easy to produce. Microbiologically influenced corrosion（MIC has been one of the most knotty problems for enterprises, which is also one of the most important areas to be solved in the future. We mainly introduce the latest research progress of biocides, and some novel biocides, comparing them with the traditional ones.