Using five insect-resistant cotton cultivars（or lines）as female parents and six normal cotton cultivars（or lines） as male parents, crosses were made by NCII design to analyze the heterosis, characters correlation and parent-offspring correlation of quality and yield characters in insect-resistant F1 hybrid cotton.The results showed that uniformity and boll weight have competitive heterosis and mid-parent heterosis.The 2.5% span length（fiber length） was significantly correlated with uniformity, specific strength and seed percentage at 0.01 levels.The most of characters were affected by their parents at different level.The analysis of parent-offspring correlation could be used as theory basis for predicting performances of hybrids characters, selecting inbred lines as parents and improving characters of parents.