With the involvement of Banks, Letter of Credit overcomes the limitation of time and space distance, provides financial undertaking for both exporter and importer, and balance the potential risk of both parties in terms of international payment.From the view of genre, L/C text belongs to specific category of English for Specific Purpose(hereinafter, ESP) research. Various typical features can be figured out corresponding to the levels of lexical, syntax and text. Based on the rich practice of international trade, this paper explores those features in light of abundant L/C material. From the perspective of lexical, terminologies are frequently employed and many a regular vocabulary is to be attached very professional meaning rather than general meaning as common ground usage. Legal language plays another important role in L/C text since it has much connection with legal action in sense of norm stipulation. Archaism also appears very often, making the solemn effect. From the perspective of syntax, parallel structure and passive voice are used at high frequency in L/C text. Ellipsis is common with respect to those sentence structure under L/C terms. In text level, L/C has typical features, such as staid configuration and sequence.In accordance with those features in the lexical, syntax and text levels, it's hope, in turn, to give suggestions concerning the translation of L/C against those different levels.