The topsoil samples were collected in 2015 and 2017 from Heaven Lake 5A Scenic Spot at Tianshan Mountain of Xinjiang, and their magnetic properties, temporal and spatial variation were investigated by the methods of magnetic measurement, statistics and GIS.The results showed that low coercive ferrimagnetic minerals (magnetite and maghemite) were predominated the magnetic materials and included some amount of anti-ferrimagnetic minerals (hematite and goethite), the content of magnetic minerals was moderate and the magnetic mineral size of the two samples was mainly composed of pseudo-domain coarse particles and SP particles with relatively low content. The properties of magnetic minerals in the topsoil samples changed significantly with time, and the content of magnetic materials and the proportion of coarse particles in 2017 samples were higher than those in 2015 ones. As for the spatial distribution of magnetic mineral content in topsoil samples, the changing trends of the distribution maps were similar in the two phases. In 2015, the high value area was located in the core scenic spot area and in the southern part of the Lake, while in 2017, the high value area expanded from the high value area in 2015 to the area around the Lake. Moreover, the content in the core scenic spot area was increased. In addition to natural factors, being far away from pollution sources such as industrial areas and cities, the spatial and temporal differences of magnetic mineral contents and grain sizes between the two phrases were mainly caused by the accumulation of magnetic pollutant particles input by tourism traffic activities in these two years. It was found that monitoring the temporal and spatial changes of the magnetic parameters of the topsoils in the scenic spot is helpful to delineate the possible changes of pollution scope and identify the sources of pollutants.