To prevent deformation of an outer lip.

A door weather strip 12 is provided with a base part which is fixed to a door sash, an inner seal 26 which seals between the door sash and a vehicle body opening part, and an outer lip 14 whose tip is extended to the outer peripheral side of a design surface and which covers clearance between the design surface and the vehicle body opening part generated on a vehicle body side face. In this door weather strip, the door sash is provided with a linear part which has roughly constant width of the design surface and is extended along the longitudinal direction of a vehicle in a roughly linear shape and a curved part which is connected to the linear part, has larger width of the design surface than that of the linear part and is curved along the outer shape of a door glass in a roughly arc shape, and is formed so that thickness of the outer lip 14b on the base end side of the curved part becomes thicker comparing with that of the outer lip 14a on the base end side of the linearly part.