To explore the ecological and physiological indicators and the related technical parameters of high-yielding summer peanut in eastern plain of Henan Province,the conventional field experiment combining with the a-nalysis of population and(individual plant was used to study the development process and its relation with the leaf age,the flowering and fruiting dynamic of population,the plant dry matter accumulation and the NPK requirement laws in high-yielding cultivation condition( ＞6 000 kg/ha). The results showed that,for the summer peanut in east-ern region of Henan,the wholegrowth period was 102-116 days,the initial flowering time began at 7-8 leaves,the forming fruit needle at 8-9 leaves,the young fruits at 11-12 leaves,the abortive fruits at 13-14 leaves and the full fruits at 16-17 leaves. The flowering duration of population lasted for about 20 days. The flower number per plant was 90 ～120.The numbers of bearing buds and full fruits in first and second lateral branches accounted for 65% and 30% of the whole plant,respectively. The plant dry matter accumulated the fastest after 50 days of emer-gence,and the dry weight of podsgrew the fastest after 37 days of bearing fruits. The coefficient of leaf area during differentgrowth period was 0.5-0.8 at seedling stage,2. 9-3. 1 at fancy stitch stage,3. 9-4. 2 at podding stage and 2. 2-2. 4 at fruit bearing stage. The total photosynthetic potential in wholegrowth period was 251. 5-272. 5 m2· d. The net photosynthetic rate in differentgrowth period was 11. 3-12. 1g/(m2· d) at seedling stage,5. 8-