The invention discloses a special probe passing through the inside of a
perineum pelvic floor ultrasonic cavity, which comprises a shell, an ultrasonic
transducer arranged in the front end of the shell and a
signal connection line which is connected with the ultrasonic
transducer and lead from the
tail end of the shell. The shell comprises a cylindrical extending-in part, a cylindrical hand-held part and a blocking part, wherein the cylindrical extending-in part is positioned at the front end and is suitable to insert into the
vagina of a patient; the cylindrical hand-held part is positioned at the rear end and is suitable to hold with a hand; the blocking part can move front and back, is arranged outside the cylindrical extending-in part, is suitable to press against and adhere to the
peripheral edge of the
vaginal orifice of the patient and is used for defining the
insertion depth of the end head of the cylindrical extending-in part in the
vagina of the patient. The special probe passing through the inside of the
perineum pelvic floor ultrasonic cavity has the beneficial effects that when the front-and-back position of the blocking part outside the cylindrical extending-in part is regulated, the
insertion depth of the end head of the cylindrical extending-in part in the
vagina of the patient is adjustable, and thus, the special probe can conveniently regulate the blocking part to a required position to define the
insertion depth of the end head of the cylindrical extending-in part in the vagina of the patient, so that the special probe can conveniently carry out step-by-step checking on the patient in the
perineum pelvic floor ultrasonic cavity, and is convenient and reliable to use, high in practicality and good in use effect.