The present invention relates to a rucksack frame device which prevents rucksack palsy and the like by distributing a load on shoulders to a frame and a back without using shoulder straps, and enables a user to maintain a correct posture even when carrying a heavy rucksack, and the rucksack frame device comprises: back frames connected in a state of being spaced from each other; a shoulder frame of which one side end is coupled to the back frames and the other side end facing the one side end extends beyond the shoulders of the user toward the back of the waist of the user; support pads which are hingedly coupled to lower ends of the back frames, and of which upper ends facing the lower ends support a part of the shoulder frame; shoulder support pads which are coupled to the shoulder frame so as to respectively and elastically press both shoulders of the user; and a waist support which is coupled to a lower end of the shoulder frame and supports the back of the waist of the user.
