辅助工具作为术前沟通健康信息传递的载体，直接影响患者的就医感知质量。数智时代的发展进一步提升了沟通工具的数字化水平，但其中所传递健康信息的拟真度对沟通质量的影响及其潜在机制仍有待研究。因此，文章探讨健康信息拟真度对患者信任度的影响，并探究图片类型与信息拟真度的协同作用。聚焦于皮肤科切痣手术，招募被试（N=318）进行了2（图片类型：静态/动态）×3（拟真度：低/中/高）组间实验，从健康信息知晓度、医患沟通体验和患者信任度维度探讨了术前沟通工具的有效性。结果显示，健康信息拟真度和图片类型之间存在交互效应，健康信息中度拟真度和动态图片的组合最有利于患者信息理解和沟通体验。此外，在拟真度影响患者信任度的过程中，信息知晓和沟通体验发挥了链式中介作用。

As the carrier of preoperative communication and health information transmission, auxiliary tools directly affect the quality of patients' perception of medical treatment. The development in the age of digital intelligence has further improved the digitalization level of communication tools, but the influence of the fidelity of health information on communication quality and its potential mechanism still need to be studied. Therefore, this study discusses the influence of health information fidelity on doctor-patient trust, and explores the synergy between picture types and information fidelity. Focusing on the operation of nevus excision in dermatology, we recruited subjects (N=318) and conducted a 2 (picture type: static/dynamic) ×3 (fidelity: low/medium/high) inter-group experiment, and discussed the effectiveness of preoperative communication tools from the dimensions of health information awareness, doctor-patient communication experience and trust. The results show that there is an interactive effect between the fidelity of health information and picture types, and the medium fidelity of health information and dynamic pictures are the most beneficial combination for patients to understand and communicate with their doctors. In addition, information awareness and communication experience play a chain intermediary role in the process that the fidelity affects patients' trust.