The invention relates to a special fire proof door for a commercial building. A first cross beam and a second cross beam which can be matched in a clamping way and can be separated are arranged at the top end of a movable door leaf, so that the first cross beam and the second cross beam can be separated under the condition that the movable door leaf is under certain thrusting force in emergency to finish rotation of a translation door; a guide rail is arranged between a concave wheel and an axle sleeve of a support to prevent the guide rail from falling and make the lower end face of a track be in contact with a rotatable axle sleeve of the support when the movable door leaf is oblique in order to reduce the friction between the support and the lower end face of the track when the support moves along with the movable door leaf in a translation way; the lower end face of a slide block is provided with a groove which is matched with a slide rail, so that a rotating shaft slide block can slide along the slide rail, the side wall of the groove is limited by an edge sliding chute when the movable door leaf rotates, and the slide block of the rotating shaft block is prevented from rotating; the end part of an opposite outer-side end of the rotating shaft is arranged hemi-spherically and is matched with an arc-shaped part of a fixing groove, so that a fixed door leaf can rotate around the rotating shaft under the action of external force in emergency.