Objective To explore the TCM constitution and syndrome laws of benign prostatic hyperplasia with chronic prostatitis. Methods 680 local residents with benign prostatic hyperplasia in the male outpatient and inpatient department of our hospital, aged between 45 and 70 years old, were routinely examined for prostate fluid and symptom scores for each patient. All patients with prostatitis were included in the survey, and TCM syndromes and physical questionnaire surveys were conducted. After the survey is completed, the SPSS23.0 software package is used for statistics to analyze the distribution characteristics and laws of the survey objects. Results 382 cases of prostatic hyperplasia with chronic prostatitis are dominated by their main constitutions, of which the solid constitution is the most, and the blood stasis is the most(47.12%); the most common TCM syndrome type is kidney deficiency and mixed blood stasis 271(70.94%). Conclusion Patients with benign prostatic hyperplasia and chronic prostatitis have more blood stasis constitution, fewer simple syndrome types, more deficiency and inclusion, and mainly kidney deficiency and blood stasis.