Water is the most basic element of ecosystem and is crucial to ecosystem structure and function. The transformation of microtopography has been widely used in ecological restoration to conserve soil water. However, the pattern and mechanisms of spatial-temporal variation in soil moisture at the micro-scale remain unclear. In this study, both topsoil (0-10 cm) and subsoil (10-25 cm) water content of four microtopographic types, which were located on an artificial grassland inside Beijing Olympic forest park, were monitored for one year. Only the topsoil water content was significantly affected by microtopography. Through eco-hydrological processes, slope gradient was an important impact factor for the spatial distribution of soil moisture. However, temporal variation in soil moisture showed no response to microtopography and was significantly affected by soil temperature. Therefore, further study is needed to reveal the potential effects of artificial microtopography on ecosystem structure and function, especially in the field of landscape transformation and ecological restoration.