The utility model provides a pulverizer and an absorbent manufacturing device provided with the pulverizer. A shell (7) comprises a shell main body (9), a rotary coverage part (16) and a rotary outer cutter (17), wherein the rotary coverage part (16) is installed on the shell main body (9) and covers the periphery face of a crushing edge (5b) in a range from a guide inlet (7a) to a guide outlet (7b) along the rotary direction of the crushing edge (5b), and the rotary outer cutter (17) is arranged on the inner side face of the rotary coverage part (16) and crushes pulp sheets (P) between the periphery faces of the crushing edge (5b). The rotary coverage part (16) is installed on the shell main body (9) in a way of capable of rotating relative to the shell main body (9) between a coverage position and an opening position, at the coverage position, the periphery face of the crushing edge (5b) is covered, and at the opening position, the crushing edge (5b) and the rotary outer cutter (17) are opened outside the shell (7). Therefore, the outer cutter is easily maintained.
