自然界中的细菌微生物极易粘附到材料表面形成生物膜，这些生物膜会成为细菌

Bacterial microorganisms in nature are very easy to adhere to the surface of the material to form biofilms. These biofilms will become a concentrated gathering place for bacteria, which seriously threatens people's health. Once the biofilm is formed, it is difficult to remove the film. One of the important directions of development. People can achieve the expected antibacterial effect by adding various types of antibacterial agents to the film material. Generally, there are three types of antibacterial agents added to the film material including inorganic antibacterial agents, organic antibacterial agents, and natural antibacterial agents. Different thin-film materials use different film-forming methods. As a special kind of material, biomedical materials can effectively compensate for the defects of the material itself through surface modification coating. When coating materials, various issues such as antibacterial properties, biocompatibility, and toxicity of antibacterial agents should be considered. <br>In this paper, the antibacterial mechanism of three types of antibacterial agents is introduced, and the antibacterial mechanism of different antibacterial agents added to the film material is analyzed. Introduced several common film-forming methods, summarized the current ideas for constructing antibacterial films and reviewed the development of antibacterial films at home and abroad and their application in biomedical materials.

The bacterial microorganisms in nature are very easy to adhere to the surface of the material to form biofilms, these biofilms will become a concentrated gathering place of bacteria, a serious threat to people's health, and once the biological film is formed it is difficult to remove the antibacterial properties of film is one of the important directions of the development of thin film materials. People achieve the expected antibacterial effect by adding various types of antibacterial agents to thin film materials, and there are three types of antimicrobialagents commonly added in thin film materials, including inorganic antibacterial agents, organic antibacterial agents, and natural antibacterial agents. The film-forming methodused varies from film to film material. As a special kind of material, biomedical material can effectively compensate for the defects of the material itself by coating its surface modification. The coating of the material should consider the antibacterial properties, biocompatibility and antimicrobial toxicity and other problems.<br>In this paper, the antibacterial mechanism of different antibacterial agents added to the thin film material is analyzed by introducing the antibacterial bacteria of three kinds of antibacterial agents. This paper introduces several common film-forming methods, summarizes the current ideas of constructing antibacterial films, and summarizes the development of antibacterial films at home and abroad, as well as the application of biomedical materials.

Bacteria and microorganisms in nature are easy to adhere to the surface of materials to form biofilms, which will become the concentration of bacteria, and seriously threaten people's health. Once biofilms are formed, it is difficult to remove the antibacterial properties of the membrane, which is one of the important directions of the development of membrane materials. In order to achieve the desired antibacterial effect, people add various types of antibacterial agents to the film materials. Generally, there are three types of antibacterial agents added to the film materials, including inorganic antibacterial agent, organic antibacterial agent and natural antibacterial agent. Different film materials use different film forming methods. Biomedical materials, as a special kind of materials, can effectively make up for the defects of the materials by surface modification coating. In the coating of materials, the problems of antibacterial, biocompatibility and antimicrobial toxicity should be considered.<br>In this paper, three kinds of antibacterial agents were introduced, and the antibacterial mechanism of different antibacterial agents added to the film material was analyzed. This paper introduces several common methods of film formation, summarizes the current ideas of building antibacterial films, and summarizes the development of antibacterial films at home and abroad and their application in biomedical materials.<br>