To form a woody molded item with stable surface pattern even in injection molding by making stationary grains by fixing grains being rigid and having smaller diameter than this on the outer periphery of crushed power of a cellulose material, and forming by blending stationary grains, a foaming agent, and a pigment in thermoplastic resin.

In order to form stationary grains, high speed stirring is implemented by putting crushed powder and surface grains in the mixer. For such surface grains, calcium carbonate is adapted and two or more kinds of pigments are used. An injection molding material is made by blending stationary grains, a foaming agent, and a pigment by employing thermoplastic resin as a base material. Herein, as resin flowed out of two pin point gates of a pendant tool 10 merges, since pattern orientations are different in regions adjoining at the A part, grain-like pattern is formed. Besides, this has small holes 13, 13 piercing through the decoration surface 11 and non-decoration surface, so that flowing of fluid resin is divided by these, thereby forming grain-like pattern is created even in B parts where they merge with each other again.