In order to study the effects of different nitrogen and potassium levels on the accumulation，transport ofphotosynthetic products and yield inrice，three different nitrogen levels(105，150，195 kg·hm -2)and 4 differentK levels(0，60，105，150 kg·hm -2)were set up in field experiment.The accumulation characteristics of drymatter，dry matter transport before and afteranthesis，yield and its components werestudied.The results showed thatwith the increase of nitrogen applicationlevel，the dry matter rapid accumulation duration of rice and the dry matteraccumulation of rice increased，the leaf dry matter transport and yield of rice increased firstly，then decreased，andreached the maximum under medium nitrogen condition，which were 938 and 7 998 kg·hm -2，respectively.Withthe increase of K applicationlevel，the maximum dry matter accumulation rate of rice firstly increased and thendecreased，making the dry matter accumulation increase firstly and then decrease.Under medium potassium condition， the maximum dry matter accumulation rate of rice was 236 kg·hm -2·d -1，and the dry matter accumulation was 14 215 kg·hm -2.Dry matter transport in stem and sheath of rice increased with the increase of potassium applicationlevel.Underhigh potassium condition，the dry matter transport of stem and sheath reached 1 704 kg·hm -2.The yield increased firstlyand then changed little with the increase of potassium applicationlevel，and the maximum yield was 7 780 kg·hm -2 undermedium potassiumcondition.On thewhole，the yield of rice treated with medium nitrogen and high potassium was thehighest，reaching 8 353 kg·hm -2.Comprehensive analysis showed that the suitable nitrogen and potassium fertilizer were150 and 105～ 150 kg·hm -2，respectively.