A human H7N9 AIV case was reported in Nanning of Guangxi Zhuang Autonomous Region. The 32-year-old male patient, surname Mo, resident of Guiping city of Guigang city, he had been working in Guangdong province before the onset of the symptoms. Now the patient is in critical condition and remaining in designated hospital in Nanning city for treatment. According to preliminary epidemiology investigation, the experts considered this case as an imported case.