Abstract: Adopted porous silica as a carrier and fixed Ag⁺in its pores by means of absorbing and sintering techniques,an Ag-carried inorganic antibacterial agent was prepared.The antibacterial and enduring antibacterial performance of the agent sintered at 200℃,400℃,600℃and 800℃ were investigated quantitatively and qualitatively.The results showed that the antibacterial agent sintered at 400℃ exhibited good antibacterial and enduring performance,which meet with the demands of Japanese industry criterion.This was mainly due to the agent's pore structure which was responsible for effective releasing silver ions.