The Hourglass region, ionized solely by the star Herschel 36, represents the brightest part of the Lagoon nebula. In this paper, we present new kinematic observations of the region in [N II] 6583 Å emission line using an imaging Fabry-Perot spectrometer in the spectrographic mode. We find both asymmetric and symmetric line profiles with large linewidths of 22-40 km/s towards the regions of the Hourglass and Herschel 36. The H II region of the Hourglass reveals a notable expansion up to -18 km/s with respect to the star. Our kinematic data suggest a particular orientation of the cavities created by the H II region expanding into the parent molecular cloud. Relatively higher velocities of -30 to -50 km/s are observed south of Herschel 36, indicating the presence of low density regions and champagne flow.