The invention discloses a lithium hydride temperature isostatic pressing method and aims to further improve density and performance of lithium hydride products. The method includes three steps of preparation of a lithium hydride cold pressing blank, preparation and sealing weld of a temperature isostatic pressing sheath, and isostatic pressing. The method can effectively improve mechanical property of lithium hydride compact bodies and organization structures of the lithium hydride products, and retards deliquescence and oxidation of lithium hydride. The density of lithium hydride materials prepared by the method is larger than 99.2%, so deliquescence and oxidation of the lithium hydride can be effectively retarded, and overall performance is improved remarkably.