The present status on σ and κ meson properties

The recent experimental data of both pipi/Kpi scattering and production processes, suggesting the existence of scalar sigma and k mesons, are reviewed. In many piphi/Kpi production processes the direct effects of their productions are observed, while they are, because of chiral symmetry, hidden in scattering processes, and now sigma(500similar to600) and k(800similar to900) are considered to be confirmed experimentally. The recent criticism on our method of analyses, which is based on the long believed prejudice of universal pipi/Kpi phase through scattering and production amplitudes, is explained not to be valid.