Recently, there have been discussions about the necessity of consumer arbitration such as ADR. The debate has progressed, because this area of arbitration has expanded into the press and medical fields. However, there is not an act for regulating consumer arbitration in South Korea. Thus, this issue has been deliberated at UNCITRAL Working Group III. The core issue of this deliberation is the validity of consumer arbitration. Especially if a pre-dispute arbitration agreement is contracted online, it progresses by using standardized terms; therefore it is possible that the Standardized Terms Regulating Act judges the relevant terms. This thesis consists of the following: First, concepts and categories of arbitration agreements. These include arbitration agreement, pre-dispute arbitration agreement, and arbitration agreement through standardized terms. Second, the validity of the above agreements will be discussed. There are three positions concerning their validity: affirmative as de lege ferenda, negative, and restrictively negative. Similar discussions concerning German law and cases would be helpful to specify and compare the issue. When a consumer arbitration agreement is contracted through standardized terms, it is necessary that the required formality of the agreement has been satisfied, before the effect of the agreement may be regulated by the German Civil Code.