To more fully ascertain the functions and structures of target materials will require the coalescing and integration of a wider spectrum of complementary information only obtained by good combination of various quantum beams,and Frontier Research and Development Committee on Highly Coalesced Quantum Beam Science and Technology was set up in Japan Society for the Promotion of Science(JSPS) to create a new,<"Highly coalesced quantum beam">_<_> research domain,developing new complete therapy for integrating various quantum beams,including neutron,x-ray,electron,synchrotron radiation and laser beams against cancer.This paper emphasizes the effectiveness of highly coalesced quantum beam science and technology in cancer,quoting case reports from promise in tests involving tumor model.