Background: The incidence of GBS at the age of <15 years is 1.5 cases per 100,000 population and peaks at the age of 70-79 years, reaching 8.6 cases per 100,000 population. The peak of this disease at the age of 15-35 years and 50-75 years. Infants are said to have the lowest risk of developing GBS. Male have 1.5 times greater risk than female Case: a 7 years old male children was presented with main complaint of weakness at extrimites on both side since March 27th, 2019. Patient felt weakness at lower extremities first and then followed by upper extremities two days later. patient cannot use his hand and leg at all. patient was unable to transfer from lying to sitting independently and unable to slide his buttocks. patient felt numbness on his both arms and leg. patient got dyspepsia one week before weakness. Based on physical and diagnostic examination patient diagnosed with Tetraparesis LMN type due to Guillan Barre Syndrome (GBS). Patient got rehabilitation program consist of NMES, ROM, active breathing, endurance, strengthening, transfer and mobilization exercise, and occupational therapy. Patient got improvement in muscle power of upper and lower extremities after five (5) month rehabilitation medicines. Barthel index improved from 25 to 95 and activity daily living independently. Conclusion: NMES, ROM, active breathing, endurance, strengthening, transfer and mobilization exercise, and occupational therapy can improve muscle power of upper and lower extremities for GBS of male children in five month rehabilitation program.