To explore the application effect of the Knowledge, Attitude, and Practice (KAP) model combined with motivational interviewing for health education in the chronic disease management of female patients with systemic lupus erythematosus (SLE). In this study, 84 women with SLE who were admitted to a tertiary hospital in Tianjin from July 2021 to April 2022 were enrolled in this study and divided into observation (n = 42) and control groups (n = 42). The control group received routine health education and treatment for chronic diseases. Based on the control group, the KAP method and questionnaire survey were adopted. Health literacy and compliance in the 2 groups were compared in the first and third months after the intervention. The observation group had a higher total score of health literacy in the third month than the control group. From before the intervention to the first and third months, improvement in the observation group was compared with that in the control group (
F
= 36.543,
P
6..001;
F
= 4.884,
P
= .03;
F
= 23.881,
P
3..001). The observation group had a higher total compliance score in the third month than the control group (
t
= 5.101,
P
= .007). From before the intervention to the first and third months of the intervention, the improvement in the observation group demonstrated an interaction with the time group compared with that in the control group (
F
= 68.116,
P
8..001;
F
= 4.884,
P
= .032;
F
= 24.789,
P
< .001). Motivational interviewing based on the KAP model is effective in the short-term overall health literacy of female patients with SLE, especially in terms of communication, health improvement, and information acquisition; after 3 months, it can influence and maintain high patient compliance.