Abstarct: Today, due to the advancement of technology and electronic business, chain stores, as the most important and largest providers of services and goods needed by people, must improve and maintain their position in the virtual sales market. Considering that the buying habits of customers are changing daily with changes in the conditions and quality factors of their lives, such as the economy, transportation, health, etc., it is necessary for business managers to use several criteria to increase their satisfaction. Keep in mind that determining the value and acceptability of these criteria from the point of view of customers and evaluating the competitive market in order to maintain survival and surpass other competitors is the responsibility of experts and researchers. In this research, using the Pythagorean fuzzy TOPSIS method, the evaluation and analysis of customer-oriented strategies in the context of virtual sales of food chain stores is discussed, so that by examining four food chain stores in Tehran province that are successful in the field of virtual sales and with the help of the opinions of qualified customers, it can be concluded that among the customer-oriented strategies of virtual sales, the strategy of information technology and services have the most value and impact, and finally, the stores are ranked baxsed on their performance.