YFeO3/LaFeO3 (YFO / LFO) heterostructures are a promising basis for creating magnetoelectronic devices. The polarization as a result of violations of inversion symmetry is a necessary condition for the technologically important properties of ferro-and piezoelectricity, used in capacitors and actuators, while the violation of time symmetry required for magnetically ordered states, such as ferromagnetism and antiferromagnetism, used in storage devices. In such structures, there is also good sensitivity and selectivity to a variety of toxic gases, such as CO and NOx [1]. We have experimentally investigated a series of heterostructures with even and odd number of monolayers YFO and LFO. The azimuthal dependence was analyzed. The results of magnetically induced optical second harmonic generation (SHG) studies is shown. Based on the symmetry analysis of the second optical harmonic generation azimuthal dependence, it was shown that the nonlinear optical signal is depend on the magnetic dipole contribution. It was shown that the maximum value of polarization was observed in heterostructures with an odd number of monolayers. The application of an external magnetic field leads to the formation of single domain structure for which there is a shift of the peaks anisotropy by an angle α. However, the intensity of the SHG is equivalent to two opposite directions of magnetization. Equivalence of the SHG intensities can be explained by the lack of crystallographic contribution to the nonlinear polarization [2].