A door weather strip includes an upper extrusion molded part installed on a door sash on a roof side; a molded part without a slit thereon, connected to the upper extrusion molded part on a door corner part; and a lower extrusion molded part installed on a vertical part of the door sash and detachably inserted into the molded part; the upper and lower extrusion molded parts and the molded part having a base bottom part and a hollow seal member formed thereon, in which: a seal bead is formed on the molded part, the seal bead extending from an inner-cabin side toward an outer-cabin side relative to the base bottom part of the molded part on the roof side and descending along an outer-cabin side of a part of the molded part on the vertical part side of the door sash.