Abstract:Objective To explore the difference in serum testosterone level between male schizophrenics and healthy male groups, and the correlation between serum testosterone expression and cognitive function. Methods A total of 64 cases of male first-episode schizophrenic patients treated in our hospital from December, 2017 to January 2016 were selected as the study group, and 57 healthy male healthy groups were used as the control group at the same time. Serum testosterone levels were measured in two groups. The cognitive function was measured, and the results of testosterone and cognitive function were compared with parallel correlation analysis. Results The serum testosterone level of the study group was (15.92?±?4.08) nmol/L, and the serum testosterone level of the control group was (15.42?±?3.12) nmol/L, and the difference was not statistically significant (P?>?0.05). In the cognitive function test of the study group, the results of digital delimiting time and connection A test were significantly higher than those of the control group (P?0.05), and the number of category fluency, space width, block diagram, continuous steady step tone hearing and constant pace hearing trial number were significantly lower than those of the control group, and the differences were statistically significant (P?0.05). Pearson correlation analysis showed that the testosterone level of healthy men was positively correlated with digital delimitation time and connection A (P?0.05), but not with spatial breadth, block diagram, continuous step auditory correct number and continuous step auditory trial number (P?>?0.05). The testosterone level of male schizophrenics was positively correlated with digital delimitation time and connection A (P?<0.05), but negative with spatial breadth, block diagram, continuous step auditory correct number and continuous step auditory trial number (P?0.05), and not with category fluency (P?>?0.05). Conclusions There is no difference in serum testosterone between the first male schizophrenics and the healthy male group (P?>?0.05). The level of serum testosterone in male schizophrenics is negatively correlated with spatial working memory and attention function (P?0.05). The cognitive function can be improved by adjusting the testosterone level of patients.