Objective：We aimed to evaluate myocardial systolic function and synchrony in the patients with permanent left bundle branch pacing(LBBP)and His bundle pacing(HBP)one year after operation by ultrasound speckle tracking imaging. Methods： Myocardial imaging of 40 patients with LBBP，40 patients with HBP and 40 control subjects were collected. Regional peak systolic strain in longitudinal，radial，circumferential motion，time to peak circumferential strain，time to peak radial strain，peak strain dispersion(PSD)，twist，and interventricular mechanical delay time(IVMD)were measured respectively. Standard deviation of time to peak circumferential strain(T - sd -CS)and standard deviation of time to peak radial strain(T - sd -RS)were calculated. The data was compared and analyzed among three groups. Results：The T-sd-CS of the HBP group in apical plane was larger than that of the control group，there were no significant differences between the HBP and control groups in other parameters. The QRS width of the LBBP group was longer than those of the HBP and control groups(P ＜ 0.05). The T-sd-CS of the LBBP group in the apical plane was larger than that of the HBP and control groups(P ＜ 0.05). The PSD of the LBBP group was larger than that of the HBP and control groups (P ＜ 0.05). There were no significantly differences in radial strain，T -sd -RS，longitudinal strain，twist and IVMD among all groups.Conclusion：Compared with the HBP and control groups，the LBBP group had slightly delayed left ventricular synchronization，and myocardial systolic functions were basically similar in the three groups.