The electric vector feature of fractional high-order Bessel vortex beam (FBV) is studied based on the vector wave analysis. Under the tightly focused and non-tightly focused conditions, the changes of three electric-field components of Ex, Ey and Ez are studied with the topological charges (TCs) from 2.1 to 3 in the increment of 0.1. Moreover, the Ex component of the FBV beam with integer and half integer TCs are comparatively analyzed during the process of the imaging scheme from tightly focused to non-tightly focused conditions. Numerical simulation results show that there are obvious difference within the three electric-field components and the circular symmetry of the bright rings are all broken. Under the non-tightly focused conditions, the circular symmetry of Ex component intensity increases. However, the distribution of Ey and Ez components demonstrate same with that under the tightly focused conditions. The circular symmetry of the Ex component of integer TCs bright rings gradually increased during the process of the imaging scheme from tightly focused to non-tightly focused conditions. Different with those, the formation of the half-integer TCs bright rings patterns remain unchanged and only has a magnification velationship.