To understand the effect of six common available combined fertilizers on the yield and nitrogen (N) use efficiency in double–rice, we carried out a field analysis in a long–term experiment base. The six fertilizers contained the organic and/or inorganic components: one with no N fertilizer (regarded as control, CK), urea fertilizer with no organic fertilizer (T1), 20% N fertilizer with pig manure (T2), 20% N fertilizer with biogas residue and slurry (T3), 20% N fertilizer with pig manure compost (T4), 20% total N fertilizer with green manure by early rice or straw in late rice (T5). The results showed, organic and inorganic fertilizers combined application had significantly improvement in rice grain yield, grains number and effective panicle number when compared to CK. And, compared to urea fertilizer treatment, grain yield of T4 treatment increased by 9.05% in early rice and 13.56% in late rice respectively, which is the best among all treatments with the highest N agronomic efficiency(16.59, 16.23 kg/kg), N uptake efficiency (38.96%, 37.71%), N partial productivity(55.44, 51.16 kg/kg) in early and late rice, and physiological efficiency(43.02 kg/kg) in late rice. This study revealed long–term combined application of organic and inorganic fertilizers can improve double–rice yield and N use efficiency, in particular, the 20% N fertilizer with pig manure compost has the best performance.