The aim of this study was to analyze the influence of soft package of liquid plastic film on the overall flavor of low-temperature yogurt. The article studied the optimal thickness and type of soft package of liquid plastic film used for packaging of yogurt product through analysis of the variations in physical properties and sensory flavor of low-temperature yogurt products packaged using soft packages of liquid plastic film with different thickness and types. It was found that the yogurt packaged with black and white film had better relative stability than that with milky film, and the black and white film with a thickness of over 80 μ m was better than those with other thickness when used under normal conditions at normal temperature. Meanwhile, certain transportation and storage environment, namely low-temperature storage, was required to keep the overall flavor of the product during the whole shelf life. In conclusion, the thickness and type of soft package of liquid plastic film had influence on the overall flavor of yogurt stored under different conditions.