Abstract: The interior environment of indoor ski resorts is characterized by persistent low temperatures, high humidity, large spaces, and dense visitor flow. Consequently, their electrical design must prioritize environmental adaptability and systemic reliability. Based on current standards such as the Standard for Electrical Design of Civil Buildings (GB 51348—2019) and the Code for Fire Protection Design of Buildings (GB 50016—2014, 2018 Edition), this paper analyzes key technologies for the electrical systems in such facilities. The analysis primarily covers: redundancy design and reliability assurance measures for the power supply and distribution systems; selection strategies for lighting systems suitable for low-temperature and high-humidity environments; requirements for the protection ratings, material selection, and installation of electrical equipment under extreme conditions; and the design requirements for interlinked control of fire protection electrical systems in these specialized environments. Through the discussion of these technical key points, this paper aims to provide a systematic solution for the electrical design of indoor ski resorts.