According to the rapid spread of smart phones, digital content transactions are also increasing rapidly. However, damages of users are also increasing in sphere of digital content transactions. One of the causes is an unfair terms of business. Thus, the government should encourage business to use a fair agreement so as to prevent damages of users from the use of unfair terms. To do this, the government should be enact a fair sample of standardized contract. This sample of standardized contract should be included contents as to a refund of excess payment, a right of cancellation, a redress from defects of contents etc. Also, a fair trade order in sphere of the mobile digital content transactions will have to be realized by means of improvement of the relevant acts and voluntary efforts of open-market operator, business and user.