NOVELTY - The method involves forming hard water-repellant structure (1) on a surface of a substrate (10) by an atmospheric pressure plasma deposition (APPD) technique. A hard coating layer (11) with a rough surface (111) is formed on the substrate. The water repellant coating layer (13) is formed on the rough surface so that the repellant structure is composed of the hard coating and the water-repellant coating. The repellant structure is provided with an average roughness ranging from 9 nm to 1 ~ mm. The hard coating is made harder than the water repellant coating.    USE - Method for fabricating hard water-repellant structure used for commodity product, industrial product, biotechnology product, computing, communication and consumer electronic products. Can also be used for coating materials on glasses fitted on surface of kitchen and bathroom, solar cell, satellite, or windshield of car, transport vessel such as boat/ship or aircraft, and in building.    ADVANTAGE - The hardness and abrasion-resistance of the hard water-repellent structure can be improved by using APPD technique so that the substrate can be well protected by the hard water-repellent structure. The thickness of the hard water-repellent structure can be reduced so that the hard water-repellent structure can be fabricated with higher transparency. The roughness of the hard coating can increase the hydrophobicity of the hard water-repellent structure so that the effect of water-resistance can be enhanced. The APPD technique is utilized to save time for vacuuming air out of equipments, to reduce spaces occupied by the equipments and to make the coating process simple so that the cost of production can be dramatically reduced.    DETAILED DESCRIPTION - An INDEPENDENT CLAIM is included for hard water-repellant structure.    DESCRIPTION OF DRAWING(S) - The drawing shows a cross-sectional view of hard water-repellant structure.    Hard water-repellant structure (1)    Substrate (10)    Hard coating layer (11)    Water-repellant coating layer (13)    Rough surface (111)