Abstract: Big data has greatly promoted the social and economic development, while creating enormous economic and social benefits. In the meantime, however, big data has also had a significant impact on the safety of personal information. This paper firstly introduces the connotation of personal information under the background of big data and the difference between it and personal privacy. Based on the comprehension of the meaning of personal information, this article briefly introduces the current situation of personal information security in our country and analyzes the problems and the legal difficulties of personal information security in the era of big data. Finally, according to the above problems and legal difficulties, we put forward some corresponding countermeasures and suggestions.

Key words: big data, personal information, personal information protection, legal dilemma, countermeasures

摘要： 大数据极大地推动了社会经济的发展，同时创造了巨大的经济效益和社会效益．但与此同时，大数据对公民的个人信息安全亦造成重大的影响．首先介绍了大数据背景下个人信息的内涵及其与个人隐私的区别，在对个人信息含义理解的基础上，简要介绍了当前我国个人信息安全的现状，并分析了大数据时代个人信息安全面临的问题以及法律困境，最后针对上述问题及法律困境，提出相应的对策建议．

关键词: 大数据, 个人信息, 个人信息保护, 法律困境, 对策