The research aimed to study the following: the development of the area, production and productivity of potatoes in Egypt and Sharkia Governorate, the development of marketing indicators for the potato crop, the development of production quantity, export quantity, consumption, losses and self-sufficiency of potatoes in Egypt during the period (2004-2019), as well as the production and economic indicators of Winter potatoes in the sample of the field study for the year 2019/2020 and the economic estimation of the losses of winter potatoes in the study sample in Sharkia Governorate. The research relied on both descriptive and quantitative analysis methods through secondary data and a preliminary data collected through a questionnaire form farmers of winter potato in Sharkia Governorate. Faqous and Al-Hussainiya centers were chosen as the two largest centers in terms of the area of ​​winter potatoes in the 2019/2020 season. This study reached to many important results as: the total cultivated area of potato was about 586.02 thousand feddans, and average production of potatoes was about 3,761.26 thousand tons during the period (2004-2019). Also total losses of potato production were about 1.95 tons, representing about 11.95% of the total amount of production, while the total amounted to Marketing losses are about 950 kg, representing about 5.8% of the total production of potato, in the study sample.