  {\alpha}Vir is a well known double-lined spectroscopic binary with a B-type
for both components. In the present paper we have analyzed a total of 90
spectra obtained through 1992-2000. Spectral analysis are based on two spectral
lines H(alpha) and HeI 6678 belong to H(alpha) region. Radial velocity analysis
have suggested low eccentric orbit (e=0.002) at inclination (i=81.89+-2.34) and
with 4d.01422 period, semi-amplitude k1=100 km/s, mass ratio q=0.49+-0.05 and
mass function f(m) =0.547. Using KOREL program for spectrum disentangling we
have been able to decompose the spectrum of the system to its primary and
secondary components. Synthetic spectral analysis of both the individual and
disentangled spectra has been performed and yielded effective temperatures
Teff= 25000+-250 K, surface gravities log g=3.75+-0.25 and projected rotational
velocities (v sin i= 180+-5 km/s) for the primary, while for the secondary they
are Teff = 17000+-250 K, log g = 4.0+-0.25.
