Although it is known that diet quality affects psychological problems in hemodialysis (HD) patients, there is need to explain the role of modifiable risk factors in this relationship. Therefore, the aim of this study was (1) to investigate the relationship between diet quality and modifiable risk factors to depression and anxiety in end-stage renal disease patients receiving maintenance HD; (2) to explore the mediating roles of modifiable factors in the relationship with diet quality to depression and anxiety.