The main fields of the study on environment human health and development in 21th Century in China are briefly discussed in the paper. The main fields include: (1) To control the endemic diseases caused by chemical factors in the environment, the protective methods which is applicable to local environmental conditions must be adopted;(2) The risks to human health from contaminants in water, air, food or commercial products have arised more attention, the study of human populations exposed to potential environmental hazards should be developed; (3) Some citizens are more at risk from urbanization due to the change of lifestyle factors, therefore, the way to protect human health in the process of economic development and urbanization should be explored.