The study aims to optimize the mechanical properties of fired kaolin/eggshell powder bio-ceramic material through systematic experimental research. The use of kaolin and eggshell powder as raw materials offers a sustainable and cost-effective solution in bio-ceramic production. By conducting systematic experiments, the research seeks to enhance the material's mechanical properties by exploring various processing parameters such as firing temperature, firing time, and composition ratios. The testing includes compressive and flexural strength tests conducted at different firing conditions. Additionally, scanning electron microscopy (SEM) is used to analyze the material's internal structure and its evolution during thermal processing. The material's chemical composition is analyzed using X-ray diffraction analysis (XRD) at different firing stages. The results provide valuable insights into the mechanical properties of the kaolin/eggshell powder bio composite. The results indicate that adding eggshell powder up to a specific amount improves the material's mechanical properties. Specifically, using only 5% of eggshell powder leads to increased mechanical properties compared to fired pure kaolin material, while using 35% by weight of eggshell powder leads to a decrease in mechanical properties. Additionally, the results show that increasing the firing temperature from 850 to 1050 and the firing time from 1 h to 2 h enhances the mechanical strength. These findings contribute to the development of bio-ceramic materials with improved mechanical performance, offering potential applications in structural and environmental fields.