The combining ability of 5 main quality traits, including fruit wall thickness (FWT), capsaicin content (FCC), ascorbic acid content (FVC), dry matter content (FDMC) and soluble sugar content of fruit (FSSC), using 4cv. TuMen Xiao Jian (TMXJ), San Dao Jin (SDJ), Chao Tian Xiao JIao (CTXJ), Tong JIao Yi Hao (TJYH) and their 6 coresses according to method 4, model I of G-rifling (1956), was analysed in this paper. The results were as follows: 1. The 5 quality traits had a high ratio of Vg/Vs, which indicated those traits were greatly affected by additive effect of genes. 2. The total combining ability of all the traits studied was to be positively and significantly correlated with the practical value. 3. The general combining ability of the cv. SDJ, TMXJ adn CTXJ were respectively high in FWT, FDMC and FCC, and the practical value of F1 which those cultivars were crossed with the tested material was also high, therefore, the cultivars could be as the parents of increasing FWT, FDMC and FCC. 4. Te t. c. a. value ofFVC, FDMC and FSSC was high in the cross of TMXJ with TJYH and it is a hopefully hybridized combination for high quality. Pepper is an important vegetable and pungent seasoning in the world. Studying on the heritability or combining ability of pepper quality traits is very important for pepper quality breeding, Some reserachers had studied on inheritance and combining ability of several quality characters in pepper, and given suggestions in parent selection and mate[iT Howevre, different reserachers selected different tested material and the results which they had got weren't same (Dolikh, 1983; Marfutina, 1972; Thakur, 1983; Rao, Popova, et al., 1975). In China, Shi Gueiyuan (1982) had investigated fruit wall thickness (FWT), hot taste and other quality characters of pepper, but she only gave a audio-visual description. So far, it hasn't been reported to determine the inheritance and combining ability with biochemical methods for pepper quality traits in China. Therefore, the combining ability of 5 main quality traits in Capsicum annuum was analysed in the present paper which was tried to reveal the inheritance and combining ability of main quality traits, and to give some information about quality breeding and parent selection and match in pepper.