The perfect vortex (PV) field has the advantage that the radius of bright ring does not change with the topological charge. The PV field has importance application value in the fields of micro-particle manipulation and quantum communication, and it is a research hotspot in the field of light field modulation in recent years. Three typical methods of generating PV field are introduced. Moreover, the modulation techniques and characterization of PV field are summarized and the applications of PV field are reviewed.