研究方向为应用与环境微生物。包括1，微生物二元发酵及微生物间相互作用机制研究；2，废水处理过程中的好氧污泥颗粒化；3，新型生物农药的微生物发酵与产业化。已在Journal of Hazardous Materials，Bioresource Technology, Biochemical Engineering Journal、Enzyme Microbial Technology、Bioprocess Biosystem Engineering、Journal of Environmental Sciences化学学报等SCI 期刊及核心期刊上发表文章30余篇，其中SCI论文十余篇。Biotechnology Progress、Bioresource Technology、Biochemical Engineering Journal、Desalination、Process Biochemistry、中国生物工程杂志、河南师范大学学报等多个SCI期刊及国内核心期刊审稿专家。
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篇代表论文：
1 Wang Hailei*, Ren Zhifang, LiPing, Gu Yangchang, Liu Guosheng, YaoJianming. Improvement of the production of a red pigment in Penicillium sp. HSD07B synthesized during co-culture with Candida tropicalis. Bioresource Technology, 2011,102(10): 6082-6087.
2 Li Ping, Wang Hailei *, Liu Guosheng, Li Xin, Yao Jianming.The effect of carbon source succession on laccase activity in the co-culture process of Ganoderma lucidum and a yeast. Enzyme and Microbial Technology 2011, 48(1):1-6.
3 Wang Hailei*, Li Li,Li Ping, Li Hui, Liu Guosheng, YaoJianming. The acceleration of sludge granulation using the chlamydospores of Phanerochaete sp. HSD. Journal of Hazardous Materials. 2011, in press.
4 Zhai Zhijun, Wang Hailei, Yan shoubao, Yao, Jianming. Biodegradation of phenol at high concentration by a novel bacterium: Gulosibacter sp. YZ4. Journal of Chemical Technology & Biotechnology. 2011, in press.
5 Wang Hailei*, Li Ping, Liu Guosheng,Li Xin, YaoJianming. Rapid biodecolourization of eriochrome black T wastewater by bioaugmented aerobic granules cultivated through a specific method. Enzyme and Microbial Technology 2010, 47:37–43.
6 Wang Hailei, Yu Guangli, Li Ping, Gu Yanchang, Li Jun, Liu Guosheng, YaoJianming. Overproduction of Trametes versicolor laccase by making glucosestarvation using yeast. Enzyme and Microbial Technology 2009,45: 46–49.
7 Wang Hailei, Li Ping, Pang Min,Zhai Zhijun,Yu Guangli ,Liu Guosheng, Yao Jianming. Rapid decolorization of azo dyesby a new isolated higher manganese peroxidase producer: Phanerochaete sp. HSD. Biochemical engineering journal 2009, 46: 327-333 .
8 Wang Hailei*, Yu Guangli , Liu Guosheng, Pan Feng. A new way to cultivate aerobic granules in the process of papermaking wastewater treatment. Biochemical engineering journal 2006, 28:99-103.
9 Wang Hailei*, Liu Guosheng, Li Ping, Pan Feng. The effect of bioaugmentation on the performance of sequencing batch reactor and sludge characteristics in the treatment process of papermaking wastewater. Bioprocess Biosystem engineering.2006, 29:283–289.
10 Wang Hailei*, Li Zongyi, Guo Weiyun, Wang Zhenyu, Pan feng. Study on the cooperation between ligninolytic enzymes produced by superior mixed flora. Journal of environmental sciences. 2005, 17(4):421-423.