Effects of lmass% Si, Mn and Cr addition on kinetics of reverse transformation at 1073K from tempered high carbon martensite structure were investigated. In all the alloys, austenite nucleates at cementite particles and grows accompanying with dissolving cementite. Hardness increases with proceeding of reverse transformation. The rate for reverse transformation is fastest in the Fe-0.6C binary alloy and becomes slower by the addition of Mn, Si and Cr. In particular, retarding effect in the Cr alloy is significant and holding time three orders of magnitude longer than the other alloys is necessary to complete reverse transformation. In Si and Mn-added alloys, austenite growth is controlled by carbon diffusion as well as in the Fe-0.6C alloy. On the other hand, in Cr-added alloy, long range diffusion of Cr diffusion is necessary for austenite growth, causing extremely sluggish reaction rate.