The tide of big data has brought new opportunities for medical development but also challenges to human medical privacy protection:nowhere to hide privacy under data monitoring, the misuse of data sharing, sec-ondary utilization of privacy in data mining and predicted privacy in data forecast. At the same time, it highlights the dilemma of integrated use of data and the protection of medical privacy:the plight of the principle of autonomy under non independent data operation, perish of subject identity in the world of data, and unforgettable medical pri-vacy information. At the same time of promoting medical information industry, this paper discussed the ways to re-alize medical privacy protection:implementing the principle of independence and transparency,establishing medical information sharing system for patients with the privacy preserving access control strategy, perfecting laws and regu-lations of medical privacy protection, and strengthening personal management awareness of medical data privacy.

The article discusses how to carry on case-based learning in the Marxist Philosophy Principle teaching.Case-based learning helps bring up students' ability in ponder,judgment,competition and innovation and is an important method that enhances students'ability to find,analyse and solve problems.It is also an important teaching method that strengthens the effect of Marxist philosophy Principle teaching.