OBJECTIVE:To Survey the therapeutic effect and complication of CT positioning with RFT in the treatment of trigeminal neuralgia,further expound advantage of CT guide positioning in RFT.METHODS:63 cases of trigeminal neuralgia were unedrwent CT positioning with RFT in our department after a follow up observation of 3-24 months. RESULTS:All the patients got successful procedure with pain relief and without recurrence and failure,three cases had complications as hematoma,tinnitus and corneal palsy but cured without sequela.CONCLUSION:CT positioning improved greatly the successful rate of puncture foramen ovale and decreased complication.It overcomes the disadvantage of traditional positioning method.It has the better value of clinical application.