Measurements of gas emissions (CH4 and NH3) during pig digested slurry storage were carried out by using a dynamic chamber system. Gas emission patterns were obtained. Methane was continuously sampled with gas sampling system (GSS) and analyzed with gas analyzer TEI55i. Ammonia was collected with atmospheric sampling instrument and analyzed with chemical analysis at intervals. The result showed methane and ammonia concentration were both higher at the early days of the storage period. The methane concentration increased in the first 12d, then began to reduce to only 1.44mg/m3 on the 32th day. The ammonia concentration increased sharply in the first 12d, but was not evident in the last two weeks, and reduced to less than 3mg/m3 after the 40th day. Abatement of methane and ammonia emissions should be effective if mitigation options were implemented in the first 30 days and 40 days of digested slurry storage.