The present invention provides a smoke screen generator with a high diffusion rate of a smoke screen.
Openings at both ends of a cylindrical housing are closed by a first closure 20 including an igniter and a second closure 30 having a smoke screen source discharge port 38 respectively. A porous cylindrical body 50 is arranged between the first closure 20 and the second closure 30. When an igniter 5 is actuated, a smoke screen generating agent 56 in a smoke screen generating agent-accommodating chamber 55 is ignited and burned, and a smoke screen source is generated. The smoke screen source moves and passes through the porous cylindrical body 50 and, after passing through a smoke screen source discharge port 38, the smoke screen source is discharged to the outside to generate a smoke screen.