Wound dressings have become a crucial treatment for wound healing due to their convenience, low cost, and prolonged wound management. As cutting-edge biomaterials, marine polysaccharides are divided from most marine organisms. It possesses various bioactivities, which allowing them to be processed into various forms of wound dressings. Therefore, a comprehensive understanding of the application of marine polysaccharides in wound dressings is particularly important for the studies of wound therapy. In this review, we first introduce the wound healing process and describe the characteristics of modern commonly used dressings. Then, the properties of various marine polysaccharides and their application in wound dressing development are outlined. Finally, strategies for developing and enhancing marine polysaccharide wound dressings are described, and an outlook of these dressings is given. The diverse bioactivities of marine polysaccharides including antibacterial, anti-inflammatory, haemostatic properties, etc., providing excellent wound management and accelerate wound healing. Meanwhile, these biomaterials have higher biocompatibility and biodegradability compared to synthetic ones. On the other hand, marine polysaccharides can be combined with copolymers and active substances to prepare various forms of dressings. Among them, emerging types of dressings such as nanofibers, smart hydrogels and injectable hydrogels are at the research frontier of their development. Therefore, marine polysaccharides are essential materials in wound dressings fabrication and have a promising future.

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With the development of Internet technology, short video platforms, led by Douyin, are becoming increasingly popular among young people. The outbreak of COVID-19 has hindered offline shopping and brought unprecedented development opportunities to online shopping. In the post-pandemic era, Douyin has transformed its business model into an e-commerce industry. Many brands choose the Douyin platform as a publicity and sales channel, showing excellent development prospects for Douyin e-commerce. In this context, this study first analyzes the reasons for the rise of online shopping and the development of Douyin e-commerce from the pandemic’s impact. Then, this study will analyze Douyin’s business model based on big data analysis and oriented by consumer preference. Due to Douyin’s business model, content-oriented campaigns to meet the new needs of consumers in the post-pandemic era are the foundation for the company’s successful publicity. On this basis, this study will further explore the new needs of consumers. Finally, based on actual cases, this study will analyze the successful publicity cases of Michelle City and Hongxing Erke and summarize the publicity strategy suggestions of Douyin’s e-commerce brand in the post-pandemic era.