醫師與病人間存有異於一般關係之信賴成份在其中，為病人保密是醫師的義務。洩漏業務秘密罪規範於刑法第316條，該法條除保護個人隱私權外，有強制醫師執行業務時能謹守其職業義務之預防功能。醫師違背保密義務刑事責任之內容及範圍，較缺乏專論探討；因此，本文從醫療角度討論：（1）病人秘密；（2）醫師保密義務；（3）醫師保密義務與法律規範；(4)醫師從事醫療行為保密義務之案例分析。本文透過真實個案之探討，了解醫師在沒有病人同意下洩漏秘密之刑事責任。本文期望醫師能善盡為病人保密之義務，並希望醫師能落實病人隱私之保護於每日之醫療實務中。

There is a specific reliance relationship between patients and doctors. Maintaining secrecy for patients is doctor＇s obligation. Rule No.316 of the Criminal Law regulates professional behaviors to protect personal privacy. Research of the concept and legislation relating to doctor obligation for maintaining secrecy is not sufficient. This article includes: （1） patient＇s secrecy; （2） doctor obligation for maintaining secrecy; （3） the legislation related to doctor obligation for maintaining secrecy; （4） a case study. This article also discusses the criminal judgments relating to doctor obligation for maintaining secrecy using a particular case. It is expected that doctors could pay more attention on maintaining patient＇s secrecy in routine medical practice.