To evaluate the feasibility of early implant loading by observation of the implant stability of early-loaded ITI implants using resonance frequency analysis (RFA).104 ITI SLA implants in 50 patients were randomly divided into 2 groups according to different loading time. In the experimental group, plants were loaded 6 weeks after surgery; in the control group, implants were loaded 12 weeks after installation. RFA was taken at 0,1,4,6,8,12 weeks after surgery for implants in both groups to get ISQ(implant stability quotient) values.Student's t test was used to calculate P values for ISQ at all time points by Minitab Release 14.13.No implant failed within the 12 weeks. No significant difference in ISQ values was found between the two groups at all time points(P>0.05).The 2 groups had the same changing mode of ISQ: a relatively high primary stability, a decrease from 1 to 4 weeks, a consequent increase after 6 weeks and a relative stability or a slight increase afterwards. The survival rate for both group during the 6 months follow-up is 100%.Early loading of ITI SLA implant should be predictable.