Because natural fibre-reinforced green composites are sustainable and have prospective uses in a variety of industrial sectors, scientists have studied them extensively over the last two to three decades. Polymer-based composites offer high specific tensile characteristics that may be customized and are simple to build into desired shapes. Lightweight composites are taking the place of metal and other conventional structural materials in many applications because of these features. Most composites are made up of two or more dissimilar phase. In polymeric composites, the uninterrupted phase called the matrix or resin is usually a hydrocarbon-based polymer. Furthermore, they offer environmentally beneficial properties including biodegradability, which can reduce landfill loads and carbon emissions considerably. In polymeric composite, the constant stage called the matrix or resin is usually a hydrocarbon-based polymer. Furthermore, it offers environmentally beneficial properties including biodegradability, which can reduce landfill loads and carbon emissions considerably. In order to investigate sustainable solutions, even innovative industries such as aerospace and automotive have experimented with crucial applications of natural fibre-reinforced composites. Using polyester resin as a matrix, silica generated from wheat husk and soy husk has been reinforced in this research. The mechanical and thermal characteristics of the composites are examined and reported.