he Brunhes-Matuyama (B/M) reversal is the most recent happened geomagnetic polarity reversal since the Quaternary period. The polarity reversal is considered as occurring synchronously around the world and so is a key time marker which can be used to divide  the stratigraphic sequences and correlating climatic proxies between different sediments. It is also very important for understanding the variation in the geomagnetic field. However, the paleomagnetic studies have revealed that the records of B/M reversal in Chinese loesspaleosol and the marine sediments are not synchronous, there is an time/climatic “offset” between these two sediments. The “offset” both leads to a challenge for the certainties of correlation between Chinese loesspaleosol sequences and the global climate records based on the paleomagnetic time scale. To discuss this “offset” question, this paper intends to review the study history and recent progress on the B/M reversal event in marine and Chinese loess sediments, and to  evaluate the possible explanations of this “offset” phenomenon. In addition, the paper also introduces the recent progress of paleogeomagnetic field variation studies traced by cosmogenic nuclide ¹⁰Be in Chinese loess, suggesting the feasibility of combining the ¹⁰Be with  paleomagnetic analysis to trace the exact position of B/M event recorded in Chinese loess.