This study aimed to identify the importance of advertising in increasing the volume of sales of the new product from the point of view of customers, and the study was conducted in the Bethlehem Governorate. The study and the questionnaire as a main tool for collecting information. The study was conducted on a random sample of (50) questionnaires. The sample items were distributed to the study population of shop customers in the Bethlehem Governorate. The study reached several results, the most important of which are: The results revealed that the degree of importance of commercial advertising in increasing the volume of sales of the new product was great. The most common manifestations were that commercial advertising increases awareness of products and services, followed by commercial advertising increases in increasing sales and profits and achieving commercial goals, and the least common of them increases commercial advertising. Communicating the goals, messages and ideas of the brands to the public. The results showed that the degree of factors affecting customers was large. The most common manifestations were the price of the product among the factors affecting the increase in the sales volume of the new product, followed by the type of the product among the factors affecting the increase in the volume of sales of the new product, and the least common was the moral value The product is one of the factors that affect the increase in the sales volume of the new product. Based on the results.