It was found that the levels of proinflammatory cytokines IL-6, IL-8, IL-1β, and TNF-α in colon of mice in the MG group were all significantly elevated (p < 0.01), while the expression levels of anti-inflammatory cytokine 1 L-10 were markedly declined in comparison with those in the NG group (p < 0.05). The gene discussed is TNF; the disease is myasthenia gravis.