The effects of combined application of different kinds of organic fertilizers (with soybean meal organic fertilizer, Lüyinggao ecological fertilizer, Baoda organic fertilizer and chicken manure organic fertilizer) and chemical fertilizers on plant height, leaf numbers, weight per plant, yield and economic benefit of pak-choi (Brassica campestris subsp. chinensis var. communis) were studied in field. The results indicated that the fertilization showed a significantly impact on the vegetables height, leaf number, weight, yield and net income with an increase rate of 7.04%—16.08%, 20.43%—23.66%, 108.07%—163.60%, 158.06%—232.26% and 250.28%—408.09% respectively. The vegetable yield and net income of the treatment applied Lüyinggao fertilizer were the highest, they reached the 15 451.5 kg·hm-2 and 28.58 thousand yuan·hm-2 respectively, and increased 28.75% and 43.26% respectively compared with the local custom application of chicken manure fertilizer treatment, the differences between Lüyinggao fertilizer treatment and chicken manure fertilizer treatment were extremely significant. Treatment of combined application of Lüyinggao fertilizer and chemical fertilizer could promote the increases in production and income, so the dosage and method were recommended: combination of Lüyinggao fertilizer 3349.95 kg·hm-2 and Shima compound fertilizer (15-15-15) 300 kg·hm-2 as the basal one-time applied, while long-term application by the method might bring heavy metal safety risk and soil secondary salinization problems for the agricultural product.