Taking green radish produced in Wei County as experimental material，this paper studied the effects of 4 nitrogen fertilizers（diammonium phosphate，ammonium nitrate，ammonium sulfate and urea）with 4 different dosages（125，250，375，500 kg·hm-2）on the chlorophyll content in fleshy roots of green
radish produced in Wei County. The results showed that the chlorophyll content in fleshy roots showed a downtrend from early，middle and late stages of the growth period，and was not affected by different nitrogen fertilizers and dosages. However，the chlorophyll contents in fleshy radish roots were variant with different nitrogen fertilizers and dosages. Among them，the effect of ammonium nitrate was the least. 375 kg·hm-2 diammonium phosphate and 125，250 kg·hm-2 ammonium sulfate were favorable for chlorophyll accumulation at pholem. 375 kg·hm-2 of diammonium phosphate and urea were favorable for chlorophyll accumulation at its xylem. The chlorophyll content in fleshy roots of green radish produced in Wei County reached the maximum value，when applying diammonium phosphate with 375 kg·hm-2 dosage.