Objective To understand the epidemiological and clinical characteristics of Norovirus in foodborne diarrhea cases in Jinan. Methods Fecal specimens, data of clinical symptoms and epidemiologic records were collected from two active monitoring sentinel hospital from January 2014 to December 2016 in Jinan. Results Totally 1 292 specimens of cases were collected. The positive rate was 18.58% (240/1 292), of which GII type accounted for 75.42%(181/240). There were no gender difference in the positive rate of positive cases, GI and GII cases (P>0.05); There were significant differences between age groups in positive rates of two genotypes (χ²=27.912,P<0.001；χ²=42.285, P<0.001). The detection rate of Norovirus in the first and fourth quarters were higher than the other quarters, with seasonal distribution characteristics. The main symptom was simple diarrhea in 240 positive cases (54.17%,130/240), followed by diarrhea + vomiting symptoms (18.75%,45/240). The intensity of diarrhea was normally moderate, and the average frequency of diarrhea was 5.82 times/day. The fecal were mainly water samples, which accounted for 93.75%(225/240). The radio of vomiting symptoms was about 30.00%(72/240)in virus-positive cases, and the vomiting frequency was mainly 1-2 times/day. The most frequent suspected exposure food was meat products, followed by sea food and dairy products. Conclusion The main type of Norovirus was GII genotype in foodborne diarrhea cases in Jinan. Norovirus was popular throughout the year with seasonal distribution characteristics. Infants were the most susceptible group. And simple diarrhea and diarrhea + vomiting symptoms were the main clinical symptoms of Norovirus infection. The monitoring, identification and prevention of foodborne diarrhea cases should be improved according to the seasonal characteristics, the different susceptible population and the different characteristics of the suspected food.