In this paper, we demonstate the existence of the companion of SN1987A by analysing the colour system in SK69°202. Assumed binary model, the accretion process that the companion accrets the ejecta from SN1987A is discussed and axial symmetry quasistationary shock wave structure is determined. The spectrum detected by satellite GINGA in Japan is imitated. The hard X-ray emission below 10 kev and ea...