 The study examines the mechanical properties of LAPOXL-12 resin polymer composite fabricated by vacuum bagging method using cetareotallic, foxtel millet, fiber reinforced with different weight ratios and alkali treatments. Results show that 20% NaOH-treated fiber-reinforced composites have an increase in tensile, flexural, and impact strength of 35.1%, 8.6%, and 6%, respectively, compared to untreated composites. TGA analysis shows a residue content of 7% for 10% NaOH-treated samples, indicating that alkali-treated cetareotallic fiber-reinforced epoxy composites can be a useful substitute in construction and building applications. This article was offered by R. V. Sikumar Reddy, D. Mahana Krishnudu, P. Rajendra Prasad, and others.