The parity conserving (PC) and the parity violating (PV) coupling constants are evaluated by considering the PC and PV poles and these coupling constants are respectively given by: C = 1.12 × 10 −7 and D = 1.15 × 10 −7 . Using these coupling constants we have estimated the decay width of K 0 1 → π + π − γ and K 0 2 → π + π − π 0 γ. Our estimated decay width of K 0 1 → π + π − γ is in good agreement with the recent experimental result.