Abstract: Based on the spring-block motion model,we have adopted the numerical simulation method to study the influence of different factors on the fault stick-slip,which involve the loading velocity of the tectonic force,the normal stress static perturbations and the dynamic perturbations.In our study,the fault stick-slip conforms to rate-and-state dependent friction law.We can deduce that with the variation amplitude of v0 which simulates the tectonic loading speed increasing,the fault friction motion turns to stick-slip from stable slip gradually.We have modeled the static triggering as stress steps,highlighting that the amplitude of stress steps have significant effects on the time of the fault stick-slip appearing as well as the amplitude of stress drop.The period of the stick-slip also has obviously changed.When force perturbations like the square wave form has been used to model the dynamic perturbations load on the fault,they would trigger the fault to take place stick-slip,whether on the peak stage of the square wave or the trough.