A hand tool alternately-magnetizing structure includes a body, at least one magnetic component, and an adjustment ring. The body defines a central axis and a handle portion; in which defines at least one recess dented along a radical direction thereof. The magnetic component is received in the recess of the handle portion, and includes a resilient member and a magnetic member. The adjustment ring is sleeved onto the handle portion and capable of angular displacement, and defines at least one switchable portion dented at an interior wall face thereof for corresponding to the recess of the handle portion. The switchable portion describes an adjacent section and an outlaying section, wherein a wall thickness defined at the adjacent section is greater than that defined at the outlaying section. The effective magnetic field is adjusted by selectively aligning the adjacent section and the outlaying section with the recess of the handle portion.