To certainly set the charging timing of a work into a bag member even if there is an error in the charging timing of the work from a weighing part or the work is charged into a chute by manual work.

The chute S of a filling part 3 is formed into a two-stage structure consisting of upper and lower stage chutes Sa, Sb and the lower stage chute Sb is made possible to fall so as to be inserted into the mouth part Pa of a bag member P, and opening and closing shutters 24, 24 closed in a V-shape are provided at the upper stage chute Sa. The work charged into the upper stage chute Sa by manual work is stopped by the shutters 24 and, after the lower stage chute Sb is inserted into the bag member P, the shutters 24 are opened to charge the work into the bag member P. Therefore, the work charged by manual work is certainly housed in the bag member.