The effects of Trichoderma bioorganic fertilizer on the growth, yield and quality of eggplant were studied.There were four treatments: no fertilizer (CK), conventional fertilizer treatment (T1), 30% less chemical fertilizer treatment than conventional fertilization(T2), 30% less chemical fertilizer treatment than conventional fertilization + trichoderma organic fertilizer(T3). The results showed that the plant height and stem diameter of T3 treatment were higher than that of T2 treatment, and the plant height reached a significant level; In terms of quality, the soluble protein content of T3 treatment was significantly higher than that of other treatments, and the Vc content was significantly higher than that of T2 treatment; In yield, T1 ＞ T3 ＞ T2 ＞ CK, compared with CK, the output of T1, T2 and T3 increased by 23.90%, 14.27% and 20.19%, respectively, and that of T3 increased by 5.18% compared with T2; From the results of economic benefit analysis, the benefit of T3 treatment increased by 8769.60 yuan per hm2 compared with T2 treatment; The results of principal component analysis showed that the overall growth and quality of eggplant under different treatments were ranked as follows: T3 > T1 > T2 > CK, and trichoderma bioorganic fertilizer instead of 30% chemical fertilizer had the highest comprehensive evaluation; The four treatments were divided into 3 categories by cluster analysis. T1 treatment and T3 treatment were classified into 1 category. T1 treatment had good growth indexes, with the highest plant height, stem diameter and yield, while T3 treatment had excellent quality indexes, with the highest contents of soluble sugar, soluble protein and VC. In conclusion, Trichoderma bioorganic fertilizer instead of 30% fertilizer can not only effectively improve plant height and stem diameter of eggplant, but also significantly increase soluble protein and Vc content of eggplant, effectively improve the quality of eggplant, and increase the yield and economic benefits of eggplant.