Quality of tourism services has a big role in the success of the trip in every destination. One day trips are one of the most important activities in the tourism industry. It is necessary to take care of the services of this such as: Transportation, Tour leader, Food and Beverage, Shopping, Security, fairness of price, and Nature & activities. This research aims to evaluate the service quality of one day trips in South Sinai from tourist's point of view, and tried to determine the problems which face tourists during the trip. To achieve the aims of this study,a quantitative approach depended on a questionnaire was directed to a sample of foreign and Egyptian tourists. The questionnaires were distributed among a random sample of tourists in (Sharm el-Sheikh, St. Catherin, and Dahab) 420 questionnaires were distributed, and 20 questionnaires were non valid to analysis. The results of the questionnaire were analyzed, means and standard deviation. The search results there are a good level about services quality of one day trip in Transportation, Tour leader, Security, Faire of price and Nature and activities for foreign and Egyptian tourists. On the other hand, there are some problems that tourists face during a day trip such as: road crashes in South Sinai, the tour leader is the inability to solve some problems appropriately, the lack of variety of meals served during the trip. The ambulance isn't available at the trip site, and the trip time isn't enough for activities.