The invention discloses a freshness preservation method of meat product marinated with Chinese-style sauce. The freshness preservation method of the meat product marinated with the Chinese-style saucecomprises the following steps of sterilizing a packaging material; soaking the meat marinated with the Chinese-style sauce in a freshness-keeping agent at 95-100 DEG C for 30-60 seconds; immediatelyfilling gas comprising 80% of O(2) and 205 of N(2); quickly heating the gas-packaged product until the center temperature of the product reaches 95-100 DEG C, and maintaining the temperature for 25-30minutes; quickly cooling the product until the temperature reaches 55-65 DEG C, maintaining the temperature for 15-20 minutes, and carrying out cooling until the temperature reaches 20 DEG C. High-oxygen-content modified atmosphere packaging, freshness-keeping agent and preservative treatments are adopted in combination with normal-temperature sterilization according to the freshness preservationmethod, and thus, the freshness preservation method is capable of further prolonging the shelf life of the meat product without affecting the taste of the meat product; moreover, the freshness preservation method is simple in operations. In addition, color and luster qualities of the meat product within the shelf life are also significantly improved, and the shelf life of the meat product marinated with the Chinese-style sauce under normal temperature can be prolonged to 10-15 days.