Abstract: 【Objective】 In this experiment, different proportions of Seed Pumpkin waste and corn straw were mixed for storage.Through sensory evaluation of mixed storage, the changes of pH value, VFA and nutrient content were determined to explore the appropriate proportion. 【Methods】 The control group (DM 51.32) was treated with 0∶1 of Seed Pumpkin waste and corn straw, and the mixture ratio of 1∶1, 1∶2 and 2∶1 was used as group A (DM 40.32), group B (DM 37.56) and group C (DM 47.70), respectively.After the two were mixed in proportion, they were put into an 800 mL space cup, sealed after compaction to ensure no air circulation, and kept away from light at room temperature.Six treatment groups were set up in each group.The sensory indexes of silage were evaluated at 60 d, and the changes of pH, VFA and nutritional components of silage were determined. 【Results】 The control group and group B had good micro storage, while group A and group C had excellent sensory evaluation.The pH value of control group was significantly higher than those of A, B and C groups (P<0.01); Group B was significantly higher than those of group A and group C (P<0.01).The content of acetic in control group was significantly different from those in group B and group C (P<0.05); There was significant difference among group A, group B and group C (P<0.05); There was no significant difference among other groups (P>0.05).The content of isobutyric in control group was significantly different from that those in group A and group C (P<0.05), and significantly different from that in group B (P<0.01).The TVFA in control group were significantly higher than those in group A, B and C (P<0.01); Group C was significantly higher than that of group B (P<0.05); There was no significant difference among other groups (P>0.05).The contents of DM, ADF and NDF decreased, but the content of CP increased. 【Conclusion】 It is recommended that the seed be mixed with 1∶1 corn straw.