The invention discloses a one-button type folding old people scooter based on multi-connecting-rod linkage and a using method. The one-button type folding old people scooter comprises a
handle set, a front scooter frame set, a bottom pull rod, a rear scooter frame set, a rear axle set, a
shock absorber, multiple sets of supporting frames, a
cushion set, a backrest set and a lifting
handle. The
handle set, the front frame set, the bottom pull rod and the rear frame set are in
pivot joint to form a four-bar linkage ABCD, the front frame set, the rear frame set and the two supporting frames are in
pivot joint to form a four-bar linkage CELR, the rear frame set, the rear axle set, the
shock absorber and the supporting frames are in
pivot joint to form a four-bar linkage KHGR, and the rear frame set and multiple components of the rear axle set are in pivot joint to form a four-bar linkage GIJF. The
cushion group is pivoted with the two groups of support frames to form a four-bar linkage LMON, and the
cushion group, the backrest group and the two groups of support frames are pivoted to form a four-bar linkage NOQP; the six groups of four-bar links are pivoted through a plurality of common points and are symmetrically arranged on the left side and the right side of the scooter to form 12 groups of four-bar links, linkage of all the four-bar links can be triggered by pulling the handle, one-key folding and unfolding of the scooter are achieved, and the length size and the height size of the folded scooter are synchronously reduced.