The purpose of this study is to analyse influential relevance of systematic, behavioral and environmental factors in deliberation for budget of the Gyeonggi Provincial councilors. A result of the analysis indicate that the council is formed mostly by members who are highly educated, newly elected and belong to the Hannara Party. Looking at the realities of the budget deliberation process, (1) inquiry period is short, (2) formation of the network collecting relevant information through regional connections (.81) is high, and (3) com·mon·place inquiry by questioning and answering (4) councilor's speaking that is based on political disposition, and (5) individual variation is big (6) deliberation ability (.37) that is required to slash the budget rationally through professional knowledge and effort is lacking. In order to solve, first, In view of the executives, establish a business program on the ground of result oriented performance principle. second, Period of the regular session should be extended and residents must elect members whose role awareness and public service spirit is high.