The region of the H2O megamaaer emission in Orion KL had been studied by VLBI method. The structure is a chain of the compact components oriented under the angle X ≅ −80°. The size of the components is ⩽ 0.1 A.U., the brightness temperature Tb ≅ 1017 K, the linewidth of each component is Δ f ⋜ 7 kHz. The emission has linear polarization P ⋝ 80 % and position angle is changed by 9.2 degree / A.U. The velocity of the components has a gradient 0.41 km/sec A.U. The masers are unsaturated, the kinetic temperature Tk ≤ 120 K. The structure corresponds to an expanding protoplanet rings, radius of which is equal R = 6 A.U. The rotation and the expanding velocities are equal 5 and 3.8 km/s accordingly. Mass of a protostar is ~ 0.7 M⊙.