Abstract: Introduced in this article is the guiding system of flexible cables of a gas holder which is of wet type and low pressure. The system consists of groups of sliding wheels allocated in certain direction. A nalysis is performed on the system performance. It can effectively prevent the bell jar from tilting. Compared with the guiding system of external frame. the cost of this guiding system can be Teduced reducing the performance of anti~tiliting. And some application problems in projects are also discussed.Mainly discussed are the two kinds of plans for sliding wheel group allocation. A gas holder of 1000m³ is mentioned as an analysis of steel cable diameter required for pull fource. The advantage of the guiding system is the manufacturing cost which is put forward as well.