初步研究了１９９５年７月２２日甘肃永登５．８级地震孕育发生过程中的断层形变异常和重力场、垂直形变场动态演化特征．孕震过程中近源区有３处断层形变呈α，β，γ相变化异常，外围区１９９３年以来先后有１０余处场地断层形变出现台阶、突跳等异常．流动重力监测到震前出现的高值异常区、同震效应及震后恢复正常的演变过程等．资料反映了孕震过程中近源区断层运动由准线性走向非线性的过程，重力场变化由孕育、发震过程的非均匀态走向震后的准均匀态的演化过程，较强地震的孕育发生与区域应力应变场的动态演化密切相关．还简要总结了作者对这次地震中短期预报试验的经验教训． Preliminary study of the July 22, 1995 Gansu Yongding 5.8 earthquake occurred during the occurrence of fault deformation and gravity field, vertical deformation field dynamic evolution characteristics. During the seismogenic process, there are three faults in the near source region which show abnormal changes of α, β and γ phases. Since 1993, there have been more than 10 sites in the peripheral areas where faults and sudden jumps occur. The gravity anomalies, coseismic effects and the evolvement process after the earthquakes returned to normal occurred before the earthquake were monitored by mobile gravity. The data reflect the nonlinear process of quasi-linear fault movement in the near source region during the seismogenic process. The evolution of the gravitational field changes from the inhomogeneous state of inoculation and seismogenic processes to the quasi-homogeneous state after the earthquake. The strong earthquake The occurrence is closely related to the dynamic evolution of regional stress-strain field. The authors also briefly summarize the author's experiences and lessons about short-term and medium-term forecast tests in this earthquake.