A systematic overview of TNT based melt cast explosives in toughening and elasticizing experiments is given. New toughening and elasticizing route, and computational research on interaction of components in melt cast explosives are introduced. Brittleness and cracks in melt cast explosives restrain the application in high performance weapon systems. The research on toughening and elasticizing melt cast explosives can be divided into three explanation: (i) the conception of “Toughening and Elasticizing” is not reported, research on the melt-cast explosives modifier mainly aims at oil saturation and insensitivity reduction, the problem of brittleness and cracks are not solved yet. (ii) toughening techniques of other composites could be used for reference to melt cast explosives, especially toughening and elasticizing techniques of nano particles and polymer materials; (iii) designing and preparing the modifier comparable to melt cast explosives, researching the mechanical properties after blending and casting, start to establish the model and mechanism of toughening and elasticizing melt-cast explosives. 