Abstract: Typhoon Yagi， a super typhoon in 2024， inflicted severe damage on the Baishamen Cultural and Creative Market in Haikou. Based on post-disaster field surveys， this paper systematically analyzed the damage characteristics and causes of 45 prefabricated modular temporary buildings under extreme wind loads. The findings revealed that damage to the building envelope was the most prevalent， accounting for over 80% of cases； damage to the main structure was dominated by tilting of light-steel frames and joint fractures， while equipment， piping， and furniture were largely displaced or water-damaged. The primary causes of the damage included an inadequate design wind-resistant rating， low material strength， weak envelope-to-structure connections， and wind-pressure amplification due to the exposed coastal topography. In response， four technical measures were proposed： 1） to elevate the wind-resistant design standards for coastal temporary buildings； 2） to optimize the connection details between the building envelope and the main structure； 3） to adopt high-performance weather-resistant materials； and 4） to strengthen wind-resistant detailing and operational maintenance. These recommendations provide a technical pathway for wind disaster mitigation in similar tropical island projects.