Application of Portable GPS in Resource Investigation of Stemona tuberosa Lour.

[Objective]To expatiate the application of portable GPS in the resource investigation of Stemona tuberosa Lour.. [Method]Based on a brief introduction of GPS (Global Positioning System) and it's positioning principle,the application of portable GPS on location,navigation,quadrature,ranging and other aspects were expatiated in the resource investigation of Stemona tuberosa Lour.. [Result]GPS had the superior function on location,navigation,quadrature and ranging. [Conclusion]The portable GPS has the potential of popularization and application in the resource investigation of traditional Chinese medicine.