摘要
As the civil law expression of internet plus transactions, the legal relations in online trading platform transactions constitute a complex aggregate of legal relationships composed of groups of legal relations. Specifically, they consist of three basic interlinked legal relationships： Contract relations for online trading platform services between the platform provider and the seller or service provider, and between the platform provider and the consumer. This includes the sales or service contract relations between the triad of the seller, the service provider and the consumer. These relations contain five kinds of major content, viz., the provision of transaction space, the publishing of transaction information, price escrow payment, distribution and delivery of the commodity, and transaction credit evaluation. They involve three forms of supplementary legal relations： the supplementary contract relationship between the platform provider and a third party payment institunon; between the seller and third party credit reporting agency; and between the seller and a logistics enterprise. The three forms of supplementary contractual legal relations are set up to act on the major contents of the basic legal relationships in online transactions. On the basis of the online trading platform service contract relationships between the platform provider and the triad of the seller, the service provider and the consumer, the flow of the above- mentioned legal relations centers on the contract of sales or service set up between the seller, the service provider and the consumer to accomplish the aim of the online transaction, meet social needs and boost economic development.
网络交易平台交易法律关系是“互联网＋交易”的民法表现形式，是由一个复杂的法律关系群构成的法律关系集合体，其中包括相互关联的三个基本法律关系，即网络交易平台提供者与销售者、服务者和消费者与网络交易平台提供者之间的两个网络交易平台服务合同关系，销售者、服务者与消费者之间的买卖或服务合同关系；五种主要内容，即提供交易空间、发布交易信息、价金托管支付、商品配送交付及交易信用评价；三种辅助性法律关系，即网络交易平台提供者与第三方支付机构、第三方征信机构以及销售者与物流企业之间为实现网络交易基本法律关系主要内容而建立的三种辅助性合同关系。通过上述法律关系的流转，以网络交易平台提供者与销售者、服务者以及消费者之间的网络交易平台服务合同关系为基础，销售者、服务者与消费者的买卖合同或服务合同为中心，实现网络交易目的，满足社会需要，推动经济发展。
