OBJECTIVE: Face paralysis peripheral idiopathic or of Bell, is unilateral, partial or complete, sudden a paralysis, characterized for acute attacking of the seventh cranial pair, face nerve, reaching muscles of mimic face and platysma. With incidence around 2,7:100.000 in minors of 10 years, increasing for 10,1; 100.000 above of this age group. It affects with equal incidence both the sides of the face, being bilateral in less than 1% of the cases and completes unilateral paralysis in 70% of the sick people. The prognostic in children is favorable, with spontaneous recovery in 95% of the cases in a period of up to 6 to 8 weeks. It is had as objective to tell to a case of face paralysis peripheral idiopathic in pertaining to school pay daily, taken care of in the service of Otolaryngology and correlating with scientific literature. CASE REPORT: Feminine patient, 2 years, followed of her mother, with sudden shunting line complaint of left lip commissure has two days. Denying co-morbid, fever, othorrea, nasal congestion, productive cough, cranial trauma or of face. Normal otolaryngologic examination, except for classic signals of peripheral face paralysis partial palpebral left with ptosis and light deletion of ridges frontals, and moderate shunting line of rhymes buccal left. Normal Computerized Tomography of mastoid and immittance testing. Initiates acyclovir and corticoid venous. Today in ambulatorialy accompaniment, with 3 weeks of evolution and partial regression of the initial picture. CONCLUSION: We must point out the importance to exclude other etiologies, especially infectious and neoplastic before establishing the diagnosis of paralysis of Bell, mainly in the pediatrician age group in which it possess low incidence, as illustrated for the told case.