Prostatitis is an intricate pathological change involving inflammation, immunity, and neuroendocrine involvement of the prostate caused by multiple complex causes and triggers, resulting in a disease with urethral irritation and chronic pelvic pain as the main clinical manifestations. The clinical manifestations of prostatitis are more diverse and the etiology is also more varied. The pathogenic infection is the main causative factor. The pathogens are mainly Escherichia coli, followed by Staphylococcus aureus, Klebsiella pneumoniae, Proteus mirabilis, Pseudomonas spp. The majority of these are single pathogen infections. The main reason for this is that it is not a good idea to have a good idea of what to expect. The pathogenic factors are also mainly pathogenic infections, but the body is more resistant or/and pathogens are less virulent, to retrograde infection, the pathogens are mainly Staphylococcus spp, followed by Escherichia coli, Corynebacterium spp and Enterococcus spp. Prostate stones and urinary reflux may be important reasons for the persistence of pathogens and recurrence of infection. Type III prostatitis: mainly refers to chronic aseptic prostatitis, chronic pelvic pain syndrome, pathogenesis is unknown, etiology is very complex, may be caused by an initiating factor, or may be multifactorial from the beginning, one or more of which play a key role and interact with each other; or may be many different diseases that are difficult to identify, but have the same or similar clinical manifestations. Type IV: generally refers to asymptomatic prostatitis, which is often detected during examination for other related diseases because of the absence of clinical symptoms. In addition, smoking, alcohol, spicy food, inappropriate sexual activity, prolonged congestion of the prostate caused by sedentary and long-term chronic extrusion of the pelvic floor muscles, cold, fatigue and other factors that lead to a decrease in body resistance or idiosyncratic constitution are all predisposing factors for prostatitis and are closely related to the onset of prostatitis. So, prostatitis is a series of intricate pathological changes, not simply a bacterial infection or male disease, but also requires the necessary auxiliary tests to determine the type and guide treatment.