With more and more attention to security issues,fast detection and analysis of explosive at long distances are urgently needed in many important situations.First of all,the research,application and limitation of the common explosive detection equipment are presented in this paper.Then several techniques with research value and good prospects for the stand-off detection of explosives are introduced;their current development,advantages and disadvantages of these techniques are briefly described.Finally,aiming at the characteristics and needs of related fields,research priorities and directions of stand-off explosive detection technology are proposed for the coming years.