The invention discloses a roller skate and a roller skating seat structure convenient in separation and combination, comprising a shoe sole, sheet steel, positioning sheet steel, a strong magnetic steel coil and a roller skating seat, the roller skate and the roller skating seat structure are characterized in that a circular hole is formed in the bottom of the shoe sole, an inner groove is arranged in the middle of the shoe sole, an upper is arranged on the shoe sole, a front snap buckle is arranged at the front end of the sheet steel, a rear snap buckle is arranged at the rear end of the sheet steel, a front opening is formed in the middle of the front snap buckle, a rear opening is formed in the middle of the rear snap buckle, a front hook is arranged in the front of the positioning sheet steel, a rear hook and a handle are arranged at the back of the positioning sheet steel, the strong magnetic steel coil is fixed on the positioning sheet steel, the positioning sheet steel is fixed on the roller skating seat, and rollers are mounted at hte lower surface of the roller skating seat. According to the roller skate and the roller skating seat structure convenient in separation and combination disclosed by the invention, as a snap buckle structure is adopted, the roller skate and the roller skating seat can be combined quickly, and the combined roller skate and the roller skating seat do not separate automatically if the handle is not pulled backwards; when walking with the roller skate, the front snap buckle and the rear snap buckle do not contact with the ground, and therefore normal walking is not influenced.