Density dependent optical potential which improved by Friedman, Interaction between kaon and pb has been studied with this potential by Numerovs method. It is shown a shifte from their pure electromagnetic states and also a broadening in these energy levels. We have added Coulomb potential to the optical potential to calculate the interaction between kaon and proton by solving Schr?dinger equation. We have also calculated nuclear bound states due to absorption kaon in helium nuclei. For this purpose we have considered k -4 He as a two body system and used Gaussian expansion for potential of nuclear density. However the four body system should be solved by Fadeev method for k -4 He, two body approximation can give good estimation for k -4 He system. Key words kaonic atom; optical potential; kaonic nuclei; strong interaction; k - p interaction; deeply bound state
