In order to explore the application effect of a new sulfonated carbon-based compound fertilizer prepared by low temperature carbonization technology of organic waste sulfuric acid on wheat in coastal saline soil area，a field experiment was conducted. The effects of no fertilization(CK)，diammonium phosphate(DP)，15-15-15 ternary compound fertilizer(CF)and ternary compound fertilizer with carbon addition of 6%，8%，12%，16% and 20% on wheat dry matter accumulation，yield，nutrient utilization rate and soil nutrient status were studied. The results showed that the application of biochar-based compound fertilizer significantly increased the grain yield of wheat，and the grain yield of wheat was increased first and then decreased with the increase of the proportion of biochar. The yields of CDP8% and CDP12% treatment were better than that of DP treatment，which increased by 6.42% and 5.82%，respectively. Compared with CF treatment，CCF12% treatment in ternary carbon-based fertilizer increased grain yield by 4.92%. The addition of biochar can increase the accumulation of nitrogen，phosphorus and potassium nutrients in plants，so as to improve the utilization rate of fertilizer nutrients. Among them，carbon addition of 6%～12% showed the best effect. The application of biochar-based compound fertilizer could improve the soil available nutrients in different growth stages of wheat. In the jointing and booting stages of wheat，soil nitrate content was significantly increased by 17.40%～40.34% and 5.45%～12.31% for the two types of carbon-based compound fertilizers with carbon content of 6%～12%. At the mature stage，soil available phosphorus contents under CDP6%，CDP8% and CDP12% treatments were significantly higher than that under DP treatment，with an increase of 8.49%～13.95%. In addition，the application of sulfonated carbon-based compound fertilizer significantly reduced the soil pH in the surface layer of wheat in the green stage compared with the ordinary compound fertilizer. In conclusion，the application of sulfonated carbon-based compound fertilizer with biochar addition of 6%～12% had a positive effect on improving soil available nutrient content，and could improve wheat grain yield and nutrient utilization efficiency.