The main objective of this thesis work was to investigate the effects of bamboo fiber surface treatment on the evaporative cooling pad performance and mechanical properties. These naturally available bamboo fibers were tested using a wind tunnel experimental test setup in a thermal laboratory shop. This study was done through the development of cooling pad materials from different surface treatment chemicals of bamboo fibers, evaluations of the developed cooling pad performance and measurements of the maximum possible cooling performances. The effective surface areas of the developed cooling pad materials were 26 by 26 cm 2 with a thickness of 8 mm,23 mm,20 mm,26 mm and 21 mm. Then the prepared cooling pad materials performance was studied and improved the pad performance by adjusting and varying the controlling parameters of the speed of fan and cooling pad material types. From the result, it is observed that the best cooling performance was developed using 20Vol% treated bamboo fiber evaporative cooling pad materials. From the results, the atmospheric temperature varies in the range of 22.2°C up to 38.6°C whereas, the outlet cool air temperature varies in the range of 15.6°C up to 22.2°C. And also to study the surface treatment effects of bamboo fibers reinforced polyester resin composite materials were done by experimental test and numerical analysis using Abaqus CAE software. Thus, the prepared bamboo fiber reinforced polyester resin composites materials were untreated bamboo fiber, 10 Vol% treated bamboo fiber (10TBF), 20 Vol% treated bamboo fiber (20TBF) using NaOH and 10 Vol% treated bamboo fibers using NaOH plus corn starch soaked for 30 minutes. These composites were manufactured by hand lay-up technique with a ratio of 30%:70% bamboo fiber and polyester resin matrix respectively. The mechanical properties, tensile test, flexural and DIC tensile test were done by using WAW 1000D hydraulic universal tensile testing machine (UTM) at a strain rate of 1mm/minute. The results obtained indicate that the use of a higher volume percentage of NaOH treatment chemicals leads to uniform distribution of stress fields on the surface of materials. In addition to that, the use of 10 Vol% NaOH plus corn starch soaking of bamboo fiber gives improved elastic and elongation properties. Keywords: Cooling Pad Materials, Fiber Surface Treatment, Evaporative Cooling, Bamboo, Mechanical Properties, Natural Fibers, DIC Tensile Test, etc.