We have studied the high energy physical process related to the cosmic ray acceleration for SN1987A. The X-ray flare observed by Ginga satellite (Makino 1988) and TeV γ-rays reported by the JANZOS collaboration (Bond et al. 1988) occurred in January, 1988. These events may be explained by the interaction of the supernova ejecta with the surrounding cloud, which induces the thermalization of shocked material and the acceleration of cosmic ray on the reverse shock at the front of cloud.

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... , the soft X-ray emission from SN1987A is well described by the interaction model of the ejecta with the circumstellar medium (Masai et al. 1988, and Yoshida and Hanami 1988). It seems to be natural to consider that the origin of the γ-ray is connected with that of the X-ray flare, since they had occurred at same time. Then, we consider about the relation of this acceleration mechanism and the evolution scenario of the progenitor.