Objective of this study was investigating effect of biogas manure on growth traits and yield of potato.The test was divided into 5 groups,each group with 3 repeats,and each repeat used 22 m2.No fertilizer was applied in CK.In group 1 base fertilizer applied and topdressing with urea.In group 2,3,4,biogas residue was used as base fertilizer,and 40%,60%and 80%biogas slurry for topdressing,respectively.During experiment,other cultural practices were the same.The results showed that soaking seed tubers with biogas slurry and using biogas residue as base fertilizer,potato germination rate was significantly improved and the mature period and the growth period prolonged.Soaking seed tubers with biogas slurry made plants grow well and leaf color was dark green.Compared with group 1,2,4 and CK,plant height of group 3,which was 110.25 cm,increased by 16.82%（P＜0.5）,7.70%（P＞0.5）,12.63%（P＞0.5）and 38.42%（P＜0.01）,and stem diameter of group 3,which was 2.05 cm,increased by 18.50%（P＜0.5）,10.81%（P＞0.5）,15%（P＞0.5） and 43.36%（P＜0.01）.Leaf number of group 3,which has 17.2 branches,increased by 16.22%（P＜0.5）,6.20%（P＞0.5）,17.81%（P＞0.5）and 66.99%（P＜0.01） compared with group 1,2,4 and CK.Yield of group 3 was 3031 kg per 667 m²,which was 696 kg,363kg,545 kg and 1467 kg more than group 1,2,4 and CK,respectively.Income of group 3 was 1044 yuan,544 yuan,819 yuan and 2200 yuan more than that of group 1,2,4 and CK,respectively.The effect was very significant.Soaking seed tuber with biogas slurry,using biogas residue as base fertilizer and biogas slurry as topdressing can significantly promoted potato growth,increased the economic income,in which applying biogas residue 4 500 kg/667 m² and 50%biogas slurry had the best effect.