The full N-S equations are solved using Beam - Warming approximate factorization method for the synthetic flow field of Vectoring of a primary jet with micro-jet. The synthetic flow field is compressible, two dimensional, time-dependent, as well as viscous. The numerical simulation result shows the primary jet can be vectored and leaned to the micro-jet actuator as “pull” mode. The parameters of micro-jet effecting on the vectoring angle the primary, the distance from the micro-jet actuator to the primary, an angle of incidence, frequency, velocity and altitude are analyzed. The effect of an angle of incidence is larger than that of others. When an angle of incidence is minus, the primary jet is pushed to the other side. When the parameters are beyond the region, the vectored angle of the primary is smaller.