Based on the literature of biological magnetic field from Web of Science, we analyzed the paper output tendency using bibliometric method, and analyzed the high frequency words in-depth, draw the word co-occurrence graph by using Citespace software. Combined with the interpretation of experts, we found the hot research topics and the development trend. We also analyzed the emerging words using the function of Citespace. The qualitative and quantitative analysis of the research hot topics and frontiers technology of the field can provide the reference for the field of scientific research personnel and related decision making department.