An optically semi-transmission reflection material comprises a resinous film comprising a thermoplastic resin, wherein the sum of total light ray transmittance, T %, and total light ray reflectance, R %, i.e., T+R, is 80 to 100%; an absolute value of their difference is |(T-R)|<50% when displayed value a and displayed value b in transmitted light are designated as a.sub.T and b.sub.T, respectively, and when in reflected light, displayed value b is designated as b.sub.r, in the transmitted light, a.sub.T and b.sub.T are in the range of -2.ltoreq.a.sub.T.ltoreq.2, and -2.ltoreq.b.sub.T.ltoreq.1.3 and the difference between the displayed value b to the transmitted light and the reflected light is |(b.sub.T-b.sub.r)|<10.