In the era of big data, it seems like seeking for a needle in a haystack to find a tiny evidence associated with proceedings from the mass of electronic data，and the complexity of data is also a challenge to the quality of E-evidence, as not only increases the cost of collecting E-evidence, but also makes the imbalance of E-evidence a difficult structural problems to solve. The era of big data has spawned new methods of collecting E-evidence, and the mining technology of big data also provides new ideas to the discovery of E-evidence. In the era of big data, it is thus necessary for us to make the collection mode of evidence play a bigger role by using big data processing technology. Confronting the effects of big data, we should improve the rights and obligations of collecting E-evidence, give corresponding weight to the collection of E-evidence by using new technologies, which can effectively protect the parties equitably access to evidence, maintain equitable competition, and promote litigation and the discovery of authenticity in the civil proceedings.