This  review  summarizes  the  development  of  multifunction  cavitation  technology  and  assesses  future  applications  for  this  process.  The  focus  is  on  attempts  to  increase  the  surface  strength  and  functionality  of  various  metals  and  plastics  and  to  elucidate  the  conditions that can induce nuclear fusion by cavitation. An experimental setup capable of producing   cavitation   fusion   based   on   positron-irradiated   laser-assisted   high-field energy-intensive functional cavitation is described, having the same basic structure as a prior  device  without  positron  irradiation.  A  combination  of  water  jet,  ultrasonic  and  magnetic field energy sources has been found to increase the sonoluminescence intensity and to theoretically exceed the threshold required for the D-T fusion reaction. This paper describes  the  incorporation  of  positron  and  laser  energy  sources  to  this  system  as  a  means  of  further  increasing  the  internal  temperature  and  pressure  values  of  bubbles.  Specifically, a Na-22 positron beam source was placed in the upper part of the reaction vessel  in  the  direction  of  the  magnetic  field  such  that  positrons  were  imparted  to  cavitation  bubbles  floating  on  the  surface  of  degassed  heavy  acetone.  These  positrons  were  partially  annihilated  by  interactions  with  electrons  via  the  Compton  effect  to  generate  gamma-rays  and  energy  via  the  reaction  e+ +  e-→ 2γ + l.02 MeV. This energy promoted the D-T chain reaction D + T → 4He + n + 14 MeV to increase the probability of cavitation fusion.