  Radial velocities analysis based on high-resolution spectra, obtained in the
H$\alpha$ region and low resolution spectra obtained in the region 4420-4960\AA
together with radial velocities, taken from other published sources allow us to
calculate orbital parameters of the massive binary system V622 Per. It is shown
that the system has an orbital period 5.214(29) days, T$_0$ = 2450661(4) and is
a post mass transfer binary. From light curve analysis of the ellipsoidal
variability we obtained inclination angle of the system and temperature of the
components. Luminosity ration of the components was found of about 4:1.
T$_{eff}$ and $log g$ were estimated for each component. It is shown that
primary, less massive but more bright star, is an evolved object that has lost
large part of its mass during the evolution. Estimations of chemical
composition of the primary show noticeable enrichment by products of the CNO
cycles. E.g. He/H reaches 0.18, nitrogen is in excess of about 0.5 dex, carbon
has low abundances (by 2-3 dex lower) and oxygen has 1 dex lower than solar
abundance. The possible evolution of the binary with the known age 14 Myrs is
discussed.
