Data regarding the size of the adult penis is of great importance to both clinicians and researchers. Currently, there is no consensus regarding the preferred method for the evaluation of penile size. Various and conflicting methods are reported in the literature. We review the data on measurement methods of the flaccid, stretched, and erected penis with the aim of constructing a recommendation for best practice. A systematic search for articles on penile length and girth measurement techniques was performed using PubMed, Google Scholar, and Cochran Library. Only peer-reviewed articles published in English before August 2018 were reviewed. All authors evaluated the methods and results sections presented in each publication. Relevant, demonstrative publications are reported in this review. We did not find definitive evidence favoring one measuring method over the other. Therefore, we advocate the use of our recommendations for penile size measurement in future publications.

关于成年阴茎大小的数据对临床医生和研究人员都非常重要。目前，关于评价阴茎大小的首选方法尚无共识。文献中报道了各种相互矛盾的方法。我们审查有关松弛，伸直和直立阴茎的测量方法的数据，以期建立最佳实践的建议。使用PubMed，Google Scholar和Cochran Library对阴茎长度和周长测量技术的文章进行系统搜索。仅审查了2018年8月之前以英语发表的同行评审文章。所有作者均对每个出版物中介绍的方法和结果部分进行了评估。这篇评论报道了相关的说明性出版物。我们没有找到确定的证据支持一种测量方法优于另一种测量方法。因此，我们提倡在以后的出版物中使用我们的建议来测量阴茎尺寸。