By Paying attention to the major role of forigner trade in any economy andespecially its effect on economic development and level of living, and if we noticethe effect of not having any control on it that can be harmful for the domesticindustries and may cause transferring the local wealth to other countries, show usthe necessity of creating some official organization with legal authority to controland monitor both importing and exporting goods according to national interestis sothat was the main reason for creation of custom organization.

In this research according to huge amount of foringner trade We are tocompare the two ways that are beeing using. First one, the traditional way thateverywork in done by hand and second one, the modern way that everywork iscomputerized (Autmated System for Custom Data). presently the traditional way ismosty used in Iranian Customs and the custom organization is planing to replace itwith the computerized system with technical assitance from United NationsConference on Trade and Development (UNCTAD) is impelementing step by step.

At the present this system is implemented in almost all developeed contriesand most of developing contries.

In this research after we compared the two systems in different aspects, wewill conclude which one is better and provide a better base to achive the customgoals.

Custom, Asycuda, Custom Duties, Custom Teritory.