Abstract: The coarse and old sun-dried green tea was used as the raw material, and inoculated schizophyllumcommuneh for solid-state fermetation to comparatively studied quality and safety before and after. The results showed that the comprehensive score of schizophyllumcommuneh fermented tea was 31% higher than that of the raw material, the quality improved markedly, and the color of the soup changed from yellow-green to orange-red, the old taste was disappeared, the taste became mellow, the smell of schizophyllumcommuneh added, and the taste became more harmonious. The effect of acute oral toxicity test of schizophyllumcommuneh fermented tea and raw materials in mice was the same. After the mice were given the test substance, they observed for 14 days, and all survived with increased weight. The maximum tolerated dose (MDT) was ?greater than 15000 mg/ (kg·bw), which was 150 times equivalent to the adult average daily dose of 6g [100 mg/(kg·bw)]. According to the standard of acute toxicity test, schizophyllumcommuneh tea is a kind of non-toxic tea beverage as the same as the raw material.