Natural cellulose fibers have gained significant attention in various industries due to their renewable and eco-friendly nature. These fibers possess desirable properties such as high tensile strength, biodegradability, and low density, making them attractive for applications in textiles, composites, and packaging materials. However, to further enhance their performance, reduction of hydrophilic properties and expand their potential applications, various treatment methods have been explored [1]. The chemical treatment was carried out by using Tri-ethoxy-vinyl-silane, Leucas Aspera fiber were immersed in the 10 % of silane solution up to 4 h. It will produce the good tensile strength compare to raw fiber [2]. The benzoyl chloride also one of the alternative chemical treatment method to improve the thermal stability of the natural fiber [3,4]. Among all treatment methods, alkali treatment has shown promise in modifying the physical, chemical, and thermal properties of natural cellulose fibers. Alkali treatment involves the immersion of fibers in alkaline solutions, typically sodium hydroxide (NaOH), to induce structural and chemical changes. This treatment leads to the removal of impurities and non-cellulosic components, such as lignin and hemicellulose, from the fiber matrix, resulting in improved fiber properties [5]. Due to the alkali treatment, the Himalayacalamus falconeri fiber enhances the 6 % of cellulose content, reduction of diameter from 103.95 to 94.4 μm and improvement in the mechanical properties (tensile strength 103.95 to 94.4 μm) [6]. The alkali treatment was carried out up to 60 min of immersing the Symphirema involucratum stem fiber (SISF) in NaOH solution. The NaOH-treated fiber enhanced the crystal size and crystallinity index (33.33 % and 3.21 nm) respectively due to this the thermal stability increased up to 371 °C compared with their raw fiber [7]. The Grewia Flavescens fiber was undergone 5 % (w/v) alkali treatment with a period of 45 min. The treated fiber enhanced the cellulose content (58 % to 68 %), the chemical compounds were verified by using FTIR spectroscopy [8,9]. The Bamboo short fiber underwent alkali treatment (6 wt%) with different time periods of 3 h, 6 h, 9 h, 12 h and 24 h. With this up to 6 h of soaking period was shown the optimum chemical and tensile properties the soaking time period was increased beyond 6 h, the properties were reduced [10]. The Areca Palm Leaf Stalk fibers were subjected to different concentrations of alkali treatment using NaOH, specifically at 5 wt%, 10 wt%, and 15 wt% with the soaked period of 30 min. From the results, 5 wt% NaOH-treated Areca Palm Leaf Stalk Fibers showed improvements in density, chemical composition, mechanical properties, and thermal stability compared to raw, 10 wt%, and 15 wt% of Areca Palm Leaf Stalk Fibers [[11], [12], [13]]. However, according to all research studies, the NaOH percentage varied depending on the type of fiber. This work has been evaluated in order to determine the optimum NaOH percentage of the HF. From the literature studies, this work aims to comprehensively characterize the physical, chemical and thermal properties of alkali-treated new natural cellulose fiber from the HF. By understanding the effects of alkali treatment on these properties, the researchers are exploring the fiber's potential applications in various industries, including textiles, composites, and packaging materials. Moreover, the economic value of the alkali-treated fiber was assessed, considering its enhanced properties and market demand, which is essential for evaluating its feasibility and commercial viability.