Objective: This study aimed to improve the flavor of Cantonese sausage and innovate the product. Methods: The volatile flavor compounds in the Cantonese sausages containing sauce-flavor Baijiu air-dried for 0 day, 2 days and 4 days were detected by GC-MS, and the changes of volatile flavor compounds were analyzed by multivariate statistics. Results: A total of 39 volatile flavor compounds were detected through GC-MS technology, including 18 hydrocarbons, 12 esters, 2 aldehydes, 2 ethers, 1 alcohol, 1 acid, 1 ketone and 2 other compounds. Esters, aldehydes, alcohols and hydrocarbons significantly increased during air-drying, while ketones and ethers showed a trend of first increasing and then decreasing during air-drying. The acids did not change significantly during air-drying. Five different flavor substances were identified through VIP values, which could be served as potential biomarkers for distinguishing sausages with different air-drying times. Six key flavor components were screened through OAV. Ethyl 2-methylbutyrate, ethyl hexanoate, and ethyl butyrate were common key flavor components in three groups of sausages, and their content significantly increased during air-drying. Conclusion: Adding sauce-flavor Baijiu can increase the types and contents of volatile flavor compounds in Cantonese sausage and promote the formation of new flavor compounds.