We report synthesis and characterization of structural and physical properties in YbInCu4 and Yb-rich Yb1+xIn1-xCu4. We have measured the powder X-ray diffraction, the temperature dependence of the magnetic susceptibility between 2 and 300 K in the magnetic field of 1 T, the high-field magnetization up to 72 T and the temperature dependence of the electrical resistivity in the magnetic field of 0 and 14 T to study the change of physical properties by substitution and to understand the origin of the valence transition.