Study aim: General purpose: to determine the effect of mandala coloring on anxiety caused by tonsillectomy Design: This study will be conducted as a clinical trial, with a control group and an intervention group, without blinding, simple randomization, on 60 patients through convenient sampling methods. Settings and conduct: This study will be conducted on 60 patients referred for tonsillectomy surgery to Imam Khomeini Hospital (RA) in Khomein city. In the intervention group, the samples will be colored for 30-45 minutes using 10 colors of colored pencils to color the raw mandala sample. After completing the coloring, the Spence questionnaire will be filled again by the participants. Participants/Inclusion and exclusion criteria: Inclusion criteria Age 8 to 15 Satisfaction of the patient and the patient's parents Obtaining a score higher than 84% in the Spence anxiety test and exclusion criteria Lack of cooperation of the patient and parents patient restlessness Intervention groups: After completing the Spence questionnaire, in the intervention group, the samples will be asked to paint a raw mandala (25 x 17 dimensions) using 10 colored pencils for 30-45 minutes; No special action will be taken in the control group Main outcome variables: Reducing anxiety caused by tonsillectomy