We study the rare kaon decays of K-L --> pi (+)pi (-)vv and K-L --> gamma v
v. In the standard mode, we find that the CP conserving and violating contr
ibutions to the branching ratios of K-L --> pi (+)pi (-)vv (K-L --> gamma v
v) are about 4.4 (1.0) x 10(-13) and 1.0 (0.15) X 10(-14), respectively.