In order to integrally interpret the modern geodetic data, on the basis of available works,we put forward the basic concept of the coupling movement between the crustal deformation and density change, analyze the theory of coupling movement, and derive a general strict formula of time-varying grav- ity caused by the coupling movement.

Moho depth distribution and crustal deformation pattern between different sub-blocks in Sichuan-Yunnan region are presented here based on the studies of the gravity field characteristics.

Active tectonics is the important manifestation of the present crustal deformation.

The space measurement and control stations are distributed in the different plates all over the world,and the site coordinates must be changed according to crust deformation.

It is shown that Dali area will be one of the most hazard zone of earthquake of Yunnan Province in the future ten years, based on the analyses of tendency variation of precursor factors of geomagnetic, gravity fields, crust deformation and ground water in the area for many years.

According to our research in the southern Tibet, based on the summary and analysis of researching results domestics and overseas, this thesis systematically study the problem of crust deformation of south Tibetan Plateau with geology tectonic, deformation model, GPS data process and forward and inversion of crust deformation.

Characteristics of present-day crustal deformation and seismicity in western China;

Floating velocity calculation in GPS crustal deformation monitoring;

The crustal deformation and the coseismic displacement were measured during the 7.