Abstract: Objective To assess the risk of public health emergencies and communicable diseases concerned in the mainland of China in August,2017. Methods An internet based expert counsel was conducted to analyze the surveillance data of public health emergencies and priority communicable diseases in China reported through different channels, and the experts in the provincial centers for disease control and prevention attended this video conference. Results Due to the epidemic of dengue fever in southeast Asia countries, the imported dengue fever cases into China would continue to increase, and the risk of local dengue fever transmission in southern provinces would increase. The other mosquito-borne diseases, such as Zika virus disease, would also show the same incidence and transmission patterns as dengue fever. Food poisoning would occur more frequently as more rural feasts and graduation celebrating feasts would be held in this season. July-August is also the high incidence season of poisonous mushroom poisoning. The incidences of water-borne, food-borne, zoogenic and contagious infectious diseases might increase after flood disasters in some areas. Due to the high temperature and humidity in August, the incidence of heatstroke could reach its peak of the year. Conclusion It is predicted that the incidence of public health emergencies and case numbers would be lower in August than in July in China. Close attention should be paid to Zika virus disease, dengue fever, Middle East respiratory syndrome, food poisoning and the public health risks caused by flood, typhoon and heat wave.