This study aimed to evaluate the effects of the concomitant administration of TPN171 and alcohol on hemodynamic and pharmacokinetic characteristics in healthy Chinese male subjects. Fifteen eligible subjects were randomly assigned to one of three sequences, each comprising three treatments: Treatment A (placebo +0.5 g/kg alcohol), Treatment B (TPN171 + 0.5 g/kg alcohol), and Treatment C (TPN171 + placebo). Enrolled subjects were administered with 10 mg TPN171 and/or 0.5 g/kg alcohol in fasting state in a randomized crossover design. Blood pressure, pulse rate (PR), blood samples, and breath alcohol test were measured at designated time points for hemodynamic and pharmacokinetic analyses. Compared with 10 mg TPN171 alone, administration of 10 mg TPN171 + 0.5 g/kg alcohol significantly lowered the area under the effect-time curve from 0 to 4 h (AUEC