The purpose of this study is to examine the effect of ear acupressure on pain, anxiety and severity of nausea in patients candidate for appendectomy. In this clinical trial, 72 subjects will be selected. Samples based on a random allocation method (Balanced Blocking Randomization) will be divided into 3 groups: placebo, control and intervention. Inclusion criteria include: confirmed appendicitis diagnosed by a surgeon, Patient's consent to participate in this study, not taking pain relief, the absence of lesion or rash at the site of acupressure exercise and ability to report symptoms. Exclusion criteria include: taking pain relief, Unwillingness to continue cooperation and any complications or other medical problems that make the intervention impossible. After confirmation of appendicitis diagnosed by a surgeon in all three groups pain, anxiety and severity of nausea will be measured. Then the intervention group will be received acupressure for 15 minutes in the thalamus point in the ear. Placebo group will be received acupressure for 15 minutes on adjacent points that are called sham points. In the control group no intervention on patients will be made. Again pain, anxiety and severity of nausea in all three groups, at 15 and 45 minutes, will be monitored. All three groups will receive routine therapy. Massage in males and females will be performed by male and female nurses respectively. The main variable is the acupressure that its effect will be evaluated on pain, anxiety and severity of nausea.