Abstract:The effect of several thickening agents on the stability of kelp drink was studied here. Results showed that agar and xanthan gum could stabilize the kelp drink. Mixed phosphate showed the highest impact on the stability of kelp drink, followed by xanthan gum, agar and kelp concentration. The optimal concentration of mixed phosphate, xanthan gum, agar and kelp drink were 0.012%, 0.15%, 0.15%, and 0.3%, respectively, under which the achieved product had nice color and good taste.