Pot experiments were conducted to study the effects of two small molecule organic compounds（amino acids,sugar alcohol)chelated calcium fertilizers and calcium nitrate and Tangchun calcium fertilizer which was a market calcium production on Chinese cabbage growth,quality and nutrients uptake by spraying and fertigation.The results showed that,compared with calcium nitrate and Tangchun calcium fertilizer,the small molecule organic compounds（amino acids,sugar alcohol)chelated calcium fertilizers promoted the calcium uptake,enhanced the growth and improved the quality of Chinese cabbage by spraying and fertigation.Compared with calcium nitrate,the biomass of the brassica chinensis calcium treated with fertilizerⅠwas increased by an average of 33.63% and 31.55% respectively under two different fertilization methods.Moreover,when the fertilizers were used in foliar spraying,compared with calcium nitrate,the biomass of the treatment which was spraying calcium fertilizer Ⅱ was increased by an average of 18.95%;when the fertilizers were used in fertigation,compared with calcium nitrate,the biomass of the treatment which was fertilized by calcium fertilizer Ⅱincreased by 49.95%.Compared with calcium nitrate,the treatment spraying two kinds of calcium fertilizer increased the accumulation of calcium by 5.31% and 6.84%;with fertigation,the accumulation of calcium increased by 13.51% and 45.31%.Furthermore,compared with the treatment that using calcium nitrate and Tangchun calcium,two kinds of calcium fertilizer increased the Vc content,soluble protein,decrease the nitrate content in different degree no matter under the spraying or fertigation.In conclusion,the application effect of small organic molecules chelated calcium fertilizers was better than other fertilizers no matter under spraying or fertigation.