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We have studied a sample of more than 25 000 young stars with proper motionsand trigonometric parallaxes from the Gaia DR2 catalogue. The relative errorsof their parallaxes do not exceed 10\%. The selection of stars belonging toactive star-forming regions was made by Marton et al. based on data from theGaia DR2 catalogue by invoking infrared measurements from the WISE and Planckcatalogues. Low-mass T Tauri stars constitute the majority of sample stars. Thefollowing parameters of the angular velocity of Galactic rotation have beenfound from them: $\Omega_0 =28.40\pm0.11$ km s$^{-1}$ kpc$^{-1}$,$\Omega^{'}_0=-3.933\pm0.033$ km s$^{-1}$ kpc$^{-2}$ and$\Omega^{''}_0=0.804\pm0.040$ km s$^{-1}$ kpc$^{-3}$. The Oort constants are$A=15.73\pm0.32$ km s$^{-1}$ kpc$^{-1}$ and $B=-12.67\pm0.34$ km s$^{-1}$kpc$^{-1}$, while the circular rotation velocity of the solar neighborhoodaround the Galactic center is $V_0=227\pm4$ km s$^{-1}$ for the adoptedGalactocentric distance of the Sun $R_0=8.0\pm0.15$ kpc.

Galactic Rotation Parameters Based on Stars from Activ Star-Forming Regions with Data from the Gaia DR2 Catalogue