We consider the time-oscillating Hartree-type Schrödinger equation iut + Δu + θ (ωt) (¦x¦-γ * ¦w¦²) u = 0, where θ is a periodic function. For the mean value I(θ) of θ, we show that the solution uω converges to the solution of iUt + ΔU + I(θ)(¦x¦-γ * ¦U¦²) = 0 for their local well-posedness and global well-posedness.