The invention discloses an environment-friendly bag which comprises a canvas bag body, a polyurethane inner bag, a litter bag and a hook and loop. The outer edge of the litter bag is fixed on the outer side of the canvas bag body through a sewing thread, a first snap fastener is arranged at the top of the litter bag, the hook and loop is fixed at the bottom of the canvas bag body, a light reflection strip is arranged on the outer side of the canvas bag body, a reinforcing strip is arranged on each of two sides of the top of the canvas bag body, a handle strip is fixed on the outer side of each fixing strip, an activated carbon plate is arranged at the bottom of the inner side of the canvas bag body, a subplate is arranged on the activated carbon plate, ventilation holes are uniformly distributed in the subplate, a second snap fastener is arranged on the subplate, and the subplate is connected with the polyurethane inner bag through the second snap fastener. The environment-friendly bag has a function of removing peculiar smell and is firm and reliable in structure and wide in application range.