アブストラクト：
Recently we discovered two giant LAEs at z=4.9 and 7.0 respectively, with imaging data from two Subaru/HSC projects (CHORUS and SSP). The two giant LAEs have the largest isophotal areas and brightest Lya luminosities among LAE candidates at each redshift. Consistently, they have extended Lya surface brightness profiles that show the existence of Lyman Alpha Halos (LAHs). Additionally we compare the halo scale lengths of the two giant LAEs with those from other studies including Ouchi et al. (2009) and Leclercq et al. (2017). The comparison shows that the correlations of halo scale length vs. Lya luminosity, Lya equivalent width, and continuum magnitude of giant LAEs are consistent with that of LAE majorities at z=3-7. Different from Momose et al. (2014), the giant LAEs at z>6 do not show larger halo scale length comparing to LAEs at lower redshift. Interestingly, the star formation rates estimated from SED fitting of the two giant LAEs are larger than the LAE majorities with the same masses and redshifts. This suggests that the halo scale length of giant LAEs does not largely depend on their specific star formation rate.