The invention provides a method for continuously preparing inulin and pectin by using jerusalem artichoke and/or endives. According to the technical scheme, the method comprises the following steps : cleaning, peeling and crushing the jerusalem artichoke and/or the endives, and pressing so as to obtain juice A and residues A; adding water to the residues A, and pressing again so as to obtain juice B and residues B; combining the juice A and the juice B so as to obtain juice C, filtering the juice C subjected to impurity removal so as to obtain juice D and residues, washing residues by using acidized ethyl alcohol, and carrying out centrifugal separation so as to obtain pectin precipitates A; concentrating the juice D so as to obtain the inulin; carrying out acid extraction on the residues B so as to obtain pectin clear liquor; obtaining pectin precipitates B by using the pectin clear liquor; and carrying out vacuum drying on the pectin precipitates A and the pectin precipitates B so as to obtain pectin. The method provided by the invention has the advantages that the production of the inulin and the pectin is combined through optimization of a preparation technology, the raw materials are fully utilized, the production cost is saved, and the production benefits are increased.
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