Fabricated waterproof heat insulation window

The utility model relates to the technical field of building engineering doors and windows, in particular to an assembly type waterproof heat insulation window which comprises a window frame profile, a heat insulation connecting piece and a drainage cover plate. The heat insulation connecting piece is connected with the window frame profile in a locked mode through a fastener and connected with the drainage cover plate in a clamped mode. According to the assembly type waterproof heat insulation window, the heat insulation connecting piece is installed on the window frame sectional material on the outer side of the door window, the heat insulation connecting piece plays a role in cutting off heat conduction between the drainage cover plate and the window frame sectional material and can also be used for installing the drainage cover plate, and the drainage cover plate is used for guiding rainwater on the vertical face of the glass. The drainage burden of the isobaric cavity below the opening sash is relieved,