The study uses the color response between sodium sulfite and p-rosanlin-formaldehyde indicators to detect the content of sodium sulfite, and further to find out a more easier and accurate method to analyze it by using self-assembled micro chemical response optical devices. The results of the study indicate that sodium sulfite discolors p-rosanlin-formaldehyde solution at certain extent; at the same time the researchers utilizes the self-assembled micro chemical response devices to detect the content of sodium sulfite in disposable chopsticks used extensively on the market, and seek for the best way to decrease it. Nevertheless, the most eco-friendly way is to prepare own tableware. Then, it not only resolves the problems of sodium sulfite bleach but reduce the amount of trash as well.