The invention relates to a low calorie dietary fiber drink. The finished product of the dietary fiber drink is prepared from water, dietary fiber, a stabilizing agent (a gellan gum), a flavoring agent, and trace elements by mixing, dissolving, stirring, homogenizing, sterilizing and packaging, and the like. The dietary fiber drink has the advantages that: the traditional method for adding the dietary fiber into common foods is replaced, and the problem of the contradiction of hunger and calorie for diabetics and people who want to lose weight is solved. The dietary fiber drink can make consumers conveniently control the calorie and select the variety and taste for intaking nutrition simultaneously. The dietary fiber drink also has the advantages of simple operation and low cost.