1. Similarity: Both provide recruitment services; Are operated through online media; The profit model is the same (online advertisement, annual membership fee, publication advertisement, training service), and they are all well-known recruitment websites in headhunting service.

2. Difference: Facing groups: The focus of the two websites is not the same. The former started as a headhunter, focusing on professionalism, while the latter focused on tradition; Geographically: Zhilian is more inclined to the north, while 5 1job is mainly national; Layout: Zhilian is more practical, while 5 1 adds some concrete functions, but it is not very good and convenient to use; For the applicant, the function of Zhilian is less than 5 1, but many functions of 5 1 are charged; For employers, Zhilian's clear and concise interface and easy operation are very convenient, while the 5 1 complex background interface is complicated.