VEHICLE DOOR ASSEMBLY

A vehicle door assembly includes: a door panel; a window frame connected to the door panel; a glass run disposed on the window frame; and a division channel extending from the glass run in a height direction of the vehicle, wherein the glass run has a joint portion to which a top end of the division channel is connected and an extension portion extending from the joint portion toward the door panel, the division channel has a mounting bracket connected to the top end of the divisional channel, and the mounting bracket is connected to the joint portion.