To simplify a sealing structure so as to improve noise insulation performance by providing a hollow sealing part in pressure-contact with the step corner part of a door opening end in a middle position between a sealing part in pressure-contact with the outer side end of the door opening end of a car body and a hollow sealing part in pressure-contact with the side face of the opening trim of a door opening wall.

A weather strip 3A is sealed in three ways by sealing parts 305, 306 and 307 between the outer periphery of a door and the door opening end 2 of a car body. Especially, the second sealing part 306 has good sealing performance because it is firmly fixed so as to cover the corner part 21 of the door opening end 2. Also, since the second and third sealing parts 306 and 307 are formed to be hollow, the inner and outer sides of the car are sealed by six walls formed by combining these with the first sealing part 305, noise insulation performance is good. Further, by the third sealing part 307, the necessity of providing another sealing part in the side face of the opening trim is eliminated. Thus, a sealing structure around the door is simplified and productivity is improved.