Because of factors such as the engagement of women workforce, the aging society, the increased numbers of single households, and the decrease in birthrates, the modern dietary lifestyle is rapidly changing. The HMR market is also dramatically changing to follow these changes in spending patterns and lifestyles. This study comprehended the correlation between consumers’ dietary lifestyle which is affected by the changed HMR trends and the attributes of commonly chosen boxed meals, and its effects on consumer purchase intentions. This study aims to provide basic information on the type of marketing that needs to be done by the constantly developing industry in order to effectively satisfy the consumers demands. 365 responses were processed through data coding and was analyzed statistically using SPSS 23.0 to obtain the results. Frequency analysis was applied in order to analyze the demographic characteristics, and factor analysis and reliability analysis were applied to dietary lifestyles, boxed meal vendor choice attributes and purchase intentions. Depending on the dietary lifestyle group, there were meaningful differences in convenience for the choice attributes of boxed-meal vendors. The choice attributes of boxed-meal vendors showed to have an effect on purchase intentions. The effective attributes were, in descending order: Taste, Price, Convenience, and Packaging. Consumers considered taste to be the most important factor in their choices. If venders comprehend the taste and the quality which their consumers prefer, through the continuous research and the taste evaluation, they would see an increase in consumer demand, even if there is an increase in product price. The study suggested that most consumers tend to prefer convenient and approachable products. However, because consumers’ preferences and their purchasing behavior require newer and more reasonable products, vendors need to develop more product lines and understand what to focus on in order to develop their products and increase their competitiveness. Boxed meal vendors and related businesses also should to find appropriate price points, as well as convenience, to lessen the burden of cost effectiveness for the consumers. Also, the effort for the meticulous food ingredient management, hygiene management, quality management, and the usage of organic, seasonal, and natural ingredients are required to gain the trust and satisfaction of the consumers.