Since time was short hospitalization after ambulatory surgery after discharge the duty of care of children at home, and parents are responsible, their familiarity with pharmacological and nonpharmacological methods of pain relief is essential. Therefore, this study aimed to determine the effect of telephone follow-up after ambulatory surgery on pain management for children at home by their parents. In these clinical trial 68 children 6 to 12 years admitted for tonsillectomy operation with careful parent choice and block randomly divided into control and test. For experimental group, including training of pharmacological and nonpharmacological methods of pain relief and telephone follow-up was done in the first three days after discharge. Data were collected log home checklist was completed by parents. Data by SPSS version 16 and chi-square tests, t and analysis of variance with repeated measures were analyzed. The mean pain intensity scores, palliative effects of acetaminophen and the use of pain relief medication and non-drug control between the two groups was statistically significant difference (P <0.05). However, between the two groups was statistically significant difference was observed sedative effects. ambulatory surgery and follow-up training before the telephone after discharge would empower parents with children at home pain management.