This research was a quasi-experimental study aimed to study the effectiveness of discharge planning on the health beliefs model of caregivers of pre-school children with pneumonia. Khao Suan Kwang Hospital Khao Suan Kwang District Khon Kaen Province The sample group was 50 caregivers of patients with pneumonia, selected by a Simple Random sampling method. Data were collected by health belief model questionnaire with a confidence value of 0.81, data analyzed by t-test statistics. Results found that Perceived risk of pneumonia after the experiment (????̅= 4.35 ± 0.56) was higher than before (????̅= 3.98 ± 0.45). Perceived severity of pneumonia after the experiment (????̅= 4.43 ± 0.58) was higher than before (????̅= 4.07 ± 0.53) Perceived benefits of pneumonia prevention after the experiment (????̅= 4.64 ± 0.77) was higher than before (????̅= 4.09 ± 0.45) and perceived barriers after the experiment (????̅= 4.15 ± 0.44) was higher than before (????̅= 3.78 ± 0.53) Results of the studied should be used in discharge planning programs to promote patient caregivers on health belief model in caring for patients with pneumonia.