A central issue in disease management is how to construct permanent surveillance networks that are capable of promptly detecting the emergence of an epizootic to enable a rapid reaction. The capacity of surveillance networks to detect a real emergence in a cost effective way has to be evaluated. Standard evaluation methods are generally qualitative or semi-quantitative and are often subjective and the tools developed to counterpart their subjectivity are not adapted to the specific contexts of developing countries. The objective of this work is to evaluate the needs for each country and the possibility of using SNAT (Surveillance Network Analysis Tool) as the first standardized tool to evaluate the avian influenza surveillance networks in Southeast Asia. There are great needs for developing countries to evaluate their surveillance systems either to identify the critical points for improvement or for presentation to the donors. However SNAT under its current format is not yet applicable to developing countries. The tool should be further developed to integrate each country needs and to identify and prioritize the means of action for improvement according to specific socio-economical contexts.