Because of its possible significance in metabolic diseases, the non-high-density lipoprotein cholesterol to high-density lipoprotein cholesterol ratio (NHHR) has garnered attention as a novel and trustworthy lipid biomarker. Psoriasis may be linked to metabolic problems and obesity, according earlier research. Uncertainty surrounds the relationship between NHHR and the onset of psoriasis, though. The primary aim of this investigation was to examine the relationship between NHHR and psoriasis.This cross-sectional analysis used data from the National Health and Nutrition Examination Survey (NHANES) conducted between 2009 and 2014. The association between psoriasis and NHHR was examined using multivariate logistic regression, and smoothed curve fitting was done to explore the non-linear relationship. Furthermore, Subgroup and sensitivity studies were performed in order to confirm the robustness of the findings.Psoriasis and NHHR were shown to be positively correlated in 15,951 adult individuals who were at least 20 years old. Psoriasis risk rose by 7% for each unit increase in NHHR [1.07 (1.01, 1.14)]. Individuals in the highest NHHR tertile were 39% more likely compared to those in the bottom tertile to have psoriasis [1.39 (1.09, 1.78)]. Across subgroups, this favorable connection remained consistent.Elevated NHHR levels are positively correlated with an upsurge chance of psoriasis in the adult population in the United States. The significance of NHHR as an indication for early psoriasis risk assessment is shown by this study.