The decorative composites composed of silk fabric/PE film were characterized by easy cleanness, corrosion-resistance, anti-oxidation and other virtues. In this paper, silk fabric/PE film decorative composites were prepared by hot pressing method. The optimum thickness of the silk fabrics and PE film was fixed by color difference analysis. The effects of hot-pressing temperature, hot-pressing pressure, and hot-pressing time on mechanical properties were studied through single factor analysis method at a certain thickness. The results showed that under the hot pressing conditions (temperature145 °C, pressure 3 MPa, time 4 min and thickness 0.3 mm), silk fabric/PE film decorative composites with ideal tensile strength, bursting strength, tearing strength and color vividness could be obtained. This paper provided an effective approach to the comprehensive utilization of silk fabrics for preparation of decorative composites.