To effectively suppress the artifacts of reflector echo with non-goal mode, this article proposes a full-skip total focusing method (FSTFM) imaging technology weighted by circular statistic vector threshold (CSVT) for surface-breaking cracks. The circular statistical vector (CSV) is established from the delayed signal. Then, the range of CSV value for the artifacts is determined by using Weibull distribution. After that, the CSVT factor is obtained by eliminating the artifacts with the threshold. Research shows that, in the effective elements range of 32~ 64, the CSV value of noise for artifacts of reflector echo with non-goal mode is 0. 2 ~ 0. 4, and the CSV value of surface-breaking cracks with TT-TT mode (goal mode) is close to 1. Therefore, the value of CSVT factor after threshold processing can effectively retain the weight factor of the defect, and suppress the most artifacts of reflector with non-goal mode and the noise with random phase distribution. Compared with full skip TFM imaging with shear wave, in the CSVT-TFM image for artificial notch orientation within -45° to 45°, the signal-to-noise ratio for artificial notch tip on the upper surface of the aluminium block is improved by range of 7. 7~ 14 dB.