Abstract: Measuring the Galactic rotation curve is of very importance for solving a number of astrophysical problems, such as estimating the total mass of the Galaxy, determining the distribution of matter, exploring dark mater, etc. It has been shown from almost all of studies on the Galactic rotation curve that the rotation curve of the outer Galaxy is roughly flat or appears to rise slightly from the Sun’s location to the heliocentric distance of 20 kpc.

Key words: Galaxy, rotation curve, population I, HI survey