Abstract: The cycle slip detection approach TurboEdit which is developed for single GPS station data is briefly reviewed and its shortcomings are analyzed.In order to overcome these shortages,a new approach is presented based on Turboedit.In the new approach,satellite-differenced ionosphere-free phase observations(DLC),ionospheric observations(LG) and Moulborne-Wuebbena observations are used together for cycle slip detection.The approach is validated with data from IGS stations,the results show that the improved approach can effectively avoid the wrong decision on unrealistic cycle slips in the original approach caused by observation noises.This improvement increases the data continuity and reduces the computation burden of the data processing software.