Agile software development is getting popular due to chaotic and changing environments of modern software projects. But there are cases of industrial teams experiencing failure with agile software development. One of the main reasons may be the inadequate capability of involved team members. The Personal Software Process (PSP) is a plan-based software process intending to improve individual software engineering’s competence. Therefore, the integration of PSP with agile methods will probably help to give full play to the advantages of agile method. This paper aims to summarize the existing evidence of combination of PSP with agile software development, so as to identify the benefits.