Errenshan area of Weiningbeishan is located in the southern margin of Alashan microcontinent, which is one of the important hydrothermal polymetallic mineralization areas in Ningxia. In order to serve the next prospecting in the periphery and deep part of the area, the multidimensional anomaly system in this area was discussed on the basis of borehole rock geochemical survey. The results show that in the known polymetallic ore bodies in this area, there are negative anomaly systems characterized by major element Na₂O, mineralization agent element anomaly system represented by S, mineralization and associated element anomaly system, etc., which confirms the existence of multidimensional anomaly system. Under the guidance of the theory of multi-dimensional anomaly system, the metallogenic conditions and favorable areas of metallogenic potential in the study area are further delineated. The research result is a new attempt to optimize geochemical exploration methods for hydrothermal polymetallic deposits in Weiningbeishan area, and has important practical value for geological prospecting in this area.