  The mass spectrum of the kaon family is analyzed by the {modified}
Godfrey-Isgur model with a color screening effect approximating the kaon as a
heavy-light meson system. This analysis gives us the structure and possible
assignments of the observed kaon candidates, which can be tested by comparing
the theoretical results of their two-body strong decays with the experimental
data. Additionally, prediction of some partial decay widths is made on the
kaons still missing in experiment. This study is crucial to establishing the
kaon family and searching for their higher excitations in the future.
