1. A rear-pressing anti-misoperation double-ended eyebrow pencil, comprising: a nib, a front lid, a piston, an intermediate ring, a hollow pencil body, a threaded rod, a nut, a first spring, a ratchet wheel, a ratchet seat, a ratchet rod, a shoulder sleeve, a bristle carrier, a bristle, an inner sleeve, a tail lid, and a button, wherein the intermediate ring is shaped as a hollow rod and sleeved on the hollow pencil body; the nib is a hollow structure and is provided at a first end of the hollow pencil body; a material is provided in the nib and adjacent to an outlet; the front lid is detachably provided at the first end of the hollow pencil body adjacent to the nib; the front lid overlays the nib; the nut is provided in the hollow pencil body; a first screw thread is provided on an inner side of the nut; the threaded rod is provided with a second screw thread and rotatably provided on the nut; a first end of the piston abuts against the material, and a second end of the piston abuts against the threaded rod; the piston moves to the outlet under pushing of the threaded rod; the material moves out of the outlet under pushing of the piston; the ratchet wheel and the first spring are sleeved on the threaded rod; two ends of the first spring respectively abut against the nut and the ratchet wheel; the ratchet wheel is slidably provided on the threaded rod and circumferentially fixed with the threaded rod; the ratchet rod is shaped as a hollow rod; one end of the threaded rod is inserted into the ratchet rod; the threaded rod axially moves and rotates in the ratchet rod; the ratchet seat is shaped as a hollow ring and provided in the hollow pencil body; a first end of the ratchet rod is inserted into the ratchet seat; an end of the ratchet wheel adjacent to the ratchet rod is provided with a first unidirectional jump tooth; the first end of the ratchet rod adjacent to the ratchet wheel is provided with a ratchet; a second unidirectional jump tooth is provided inside an end of the ratchet seat adjacent to the ratchet wheel; the ratchet wheel rotates under pushing of the ratchet rod; the first unidirectional jump tooth is clamped into the second unidirectional jump tooth; the shoulder sleeve is provided at a second end of the hollow pencil body away from the nib; a second end of the ratchet rod away from the ratchet penetrates through the shoulder sleeve; the bristle carrier is sleeved on the second end of the ratchet rod-away from the ratchet; the bristle carrier and the ratchet rod are circumferentially fixed; the bristle is provided on the bristle carrier; the tail lid is detachably provided at the second end of the hollow pencil body adjacent to the bristle carrier; the tail lid overlays the bristle; the button is provided at an end of the tail lid; the inner sleeve is slidably provided in the tail lid; a first end of the inner sleeve abuts against the bristle carrier, and a second end of the inner sleeve is connected to the button; the ratchet rod, the ratchet wheel, the bristle carrier and the inner sleeve axially move toward the material under pushing of the button and are restored through an elastic force of the first spring; the bristle carrier and the shoulder sleeve are provided with a locking device; and in response to a locked state of the locking device, the bristle carrier and the shoulder sleeve are axially fixed.