Perineum suturing dilator

The utility model discloses a suturing perineum dilator which comprises an upper dilation piece (1) and a lower dilation piece (2), the upper dilation piece (1) is rotatably connected with the lower dilation piece (2), one end of the lower dilation piece (2) is provided with a vertical plate (3), and the inner side of the vertical plate (3) is provided with a fixed shaft (4); a first round hole (5) is formed in one end of the upper expanding piece (1), the fixed shaft (4) penetrates through the first round hole (5), and a ratchet wheel (7) is arranged on the outer side of the end portion of the upper expanding piece (1). The fixed shaft (4) is connected with a pawl disc (8) through a key, and a pawl (9) matched with the ratchet wheel (7) is rotationally arranged on one side of the pawl disc (8). The positioning structure is arranged at the rotating joint of the upper expanding plate and the lower expanding plate, the structure is simple, the use is convenient, and the influence on the sewing operation is redu