Study aim: Determining and comparing the effects of lavender and rose scents on pain and anxiety after pediatric surgery. Design: This study is a randomized clinical trial. The sample size was calculated using Gpower software and considering the values ​​obtained from similar studies and considering the effect size of 0.61, type I error of 0.05, power of 80%, and predicted sample attrition rate of 10%. The final sample size for the three control and intervention groups with lavender and rose flower scent was 111 people (37 people in each group). Settings and conduct: This study will be conducted in the surgical ward of Mardani Azar Children's Hospital. Children who meet the inclusion criteria will be included in the study using convenience method and informed consent forms will be obtained from their parents. Then, eligible children will be assigned to one of three control, lavender, and rose groups using a random block of four and six. Participants/Inclusion and exclusion criteria: Inclusion criteria: Age 7-12 years, appendectomy surgery, no psychiatric problems based on medical records, no asthma and allergic rhinitis based on questions from parents. Exclusion criteria: Need for oxygen after surgery, need for intensive care after surgery. Intervention groups: Intervention group1: Using lavender scent to manage children's pain and anxiety Intervention group2: Using rose scent to manage children's pain and anxiety Control group: Using distilled water to manage children's pain and anxiety Main outcome variables: During this study, the effect of the type of aromatherapy as an independent variable on pain intensity (primary outcome) and anxiety (secondary outcome) as dependent variables after surgery will be examined.