The cultivation area of early-maturing potato in the double cropping area of Hebei province was gradually increasing. It was of great significance for the development of early-maturing potato industry in Hebei province to clarify the growth characteristics and nutrient absorption and utilization of early-maturing potato under the current nitrogen input level. A comprehensive evaluation of potato dry matteraccumulation，nitrogen uptake and accumulation and potato yield under differentnitrogen forms(ammoniumnitrogen，nitrate nitrogen and amidenitrogen，remarking asNF1，NF2 andNF3，respectively)was carried out with early maturing potato cultivar Shishu 1 as test material. The results showed that the dry matter accumulation of early-maturing potatoes in each treatment wasconsistent with the logistic growthcurve，and the dry matter accumulation in the whole growth period ofNF1，NF2 and NF3 treatments were16401.6，15603.6 and 16383.0 kg·hm-2，respectively. The nitrogen accumulation rate of potato in each treatment increased significantly before the buddingstage，and then decreased. After entering the maturestage，the nitrogen accumulation rate of potatoes in NF3 treatmentincreasedsignificantly，reaching 5.53 kg·hm -2·d-1. The nitrogen accumulation of NF3 in the mature period wassignificantly higher than that in NF2 and CKtreatments，and there was no significant difference compared to NF1 treatment. The nitrogen utilization rate of potatoes in NF3 treatment was39.69%，and it was significantly higher than that in NF1 andNF2treatment，and its agronomic efficiency was 52.67 kg·kg-1 which was significantly higher than that in NF2 treatment. The yield of commercial potato in NF3 treatment was 56688 kg·hm-2，which was significantly higher than that in othertreatments，and the total yield was 59460 kg·hm-2，which was significantly higher than that in control without nitrogen fertilizer and NF2 treatment. Inconclusion，under the nitrogen input level of potato in the double cropping area of Hebeiprovince，applying amide nitrogen had the most significant effect on the nitrogen uptake and accumulation of potato and theformation of commercialyield，which was the optimal treatment under the experimental conditions.