Natural-Vegetable-Gum (NVG) drilling fluids have been long used. But the application of NVG has largely been restricted in the recent years because of environmental and vegetable protections. Therefore, it is urgently necessary to find further natural vegetables suitable for drilling purposes. This paper it firstly analyzes the chemical compositions and then rheological properties of regularly used NVG drilling fluids. The application prospect of a new NVG-QM is also discussed at the end of this paper.