Nitro compound fertilizer is a high concentration compound fertilizer containing ammonium nitrogen, nitrate nitrogen, available phosphorus, and is a significant effect of increasing yield of high-quality fertilizer. The technical principle, process flow and process characteristics of tower nitro compound fertilizer were introduced.The technology were compared with partial slurry production process technology.It is proposed that the tower melt granulation process can directly produce nitro compound fertilize by using ammonium nitrate solution, which has the advantages of short process flow, low investment, low energy consumption, no pollution, and high product quality, etc..It is suitable for ammonium nitrate enterprise technical transformation and product upgrading.