Abstract: In recent years much progress has been made in studies of the effect of a static magnetic field (SMF) on cancer. This article presents current evidence (from the molecular, cellular,animal, and patient levels), as well as some possible mechanisms explaining the effects of SMF on cancer inhibition. Although using SMF in cancer treatment is still at a very preliminary experimental stage, its effectiveness and safety have shown great anti-cancer potential. Therefore, it is necessary to conduct systematic investigations into the relationship between SMF and tumours, and to carry out clinical trials that meet international standards, as well as to unravel the underlying molecular mechanisms.