Pot experiments were conducted to study the effects of ammonium polyphosphate (APP)added with different biological synergists[humic acid(HA),amino acids(AA) and alginate oligosaccharides(AOS)]on the yield and phosphorus(P)utilization efficiency of wheat(Triticum aestivum L.),so as toclarify the application effects of the biological synergists on APP and provide scientific basis for the development of value-added fertilizers using APP as raw material. The results showed that compared with APP treatment,the APP added with biological synergists treatments promoted the growth of wheat to different extents,enhanced tillering, and increased effective spike numbers by 8.5%—12.8%;moreover,the spike rates of wheat under APP+HA and APP+AA treatments were also increased significantly. APP+HA treatment raised the intercellular CO₂ concentration and net photosynthetic rate of flag leaf at the flowering stage, and reduced the stomatal limit value, thereby promoting the photosynthesis.The APP added with biological synergists treatments increased wheat yield by 6. 2%—13.5%, and APP+AA treatment had the highest yield.Compared with APP treatment, P utilization efficiency,P dry matter production efficiency,agronomic P utilization efficiency,P physiological efficiency and P fertilizer production efficiency of wheat under the APP added with biological synergists treatments were significantly increased by 18.3%—29.1%,23.6%—33.4%,20.5%—44.9%,60.1%—102.8% and6.2%—13.5% respectively,with the biggest increase of APP+AA treatment for the last three indicators;however,the total P accumulation, P uptake efficiency and P recovery efficiency were significantly decreased by 21.5%—29.2%,14.9%—20.2% and 24.6%—33.4% respectively,and there were no significant differences among different biological synergist treatments.The P harvest index under the APP added with biological synergists treatments were also decreased significantly by 1.07—3.83 percentage points,and the APP+AOS treatment had the smallest drop.To sum up,the APP added with biological synergists treatments further increased wheat yield,but had certain adverse effects on P absorption and its transport to grain.