The invention belongs to the field of medical information technology, and specifically relates to an evaluation system for evaluating psoriasis and use thereof. The evaluation system includes: a data acquisition module for acquiring the dsDNA content of a serum sample to be detected, a data analysis module for evaluating psoriasis based on the dsDNA content, and a data output module for outputting results according to the evaluated psoriasis. When the serum sample to be detected is a serum sample without phenotype and the dsDNA content is greater than or equal to 1.11 ng/ml, the output would be: abnormal and extremely high risk. The sensitivity of the evaluation system is 61.6 percent and the specificity is 74.8 percent. Compared with other types of psoriasis-related methods and apparatuses, the sensitivity and specificity have obvious advantages.

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