Method for producing a blind frame corner connection, comprising two blind frame hollow profiles with visible surfaces (13, 23) inclined differently in relation to the exterior visible surface (11, 21) and with a horizontal butt joint between the exterior visible surfaces (11, 21), comprising at least the following method steps: a) providing a first plastic hollow profile with a first angle of inclination α of the visible surface with respect to the exterior visible surface for a lower horizontal blind frame portion; b) providing a second plastic hollow profile with a second angle of inclination α of the visible surface with respect to the exterior visible surface for the vertical blind frame portion; characterized by: c) producing a clearance in each case at the end of the vertical blind frame portions, an angle α' between a cut edge and an exterior visible surface corresponding in each case to the opposite angle of the first angle of inclination α; d) producing a clearance in each case at the end of the horizontal blind frame portions, at least the outer exterior visible surface in each case being retained in an overhang (11.1) and the part of the profile body adjoining behind it being removed; e) attaching an outer connector element on the end face of the horizontal blind frame portion, the outer connector element having at least one profile tongue (41, 42) rising up beyond the cross section of the horizontal blind frame portion; f) placing the vertical blind frame portion onto the horizontal blind frame portion, the profile tongue (41, 42) of the outer connector element being pushed in between locking ridges on the outer circumferential surfaces of the vertical blind frame portion and g) connecting the blind frame portions (10, 20) by means of in each case an angle connector element, which is placed onto the inner rebate faces (14, 24) and is screwed to them; it also being possible for method steps a) to f) to be carried out in a different sequence. a) providing a first plastic hollow profile with a first angle of inclination α of the visible surface with respect to the exterior visible surface for a lower horizontal blind frame portion; b) providing a second plastic hollow profile with a second angle of inclination α of the visible surface with respect to the exterior visible surface for the vertical blind frame portion; c) producing a clearance in each case at the end of the vertical blind frame portions, an angle α' between a cut edge and an exterior visible surface corresponding in each case to the opposite angle of the first angle of inclination α; d) producing a clearance in each case at the end of the horizontal blind frame portions, at least the outer exterior visible surface in each case being retained in an overhang (11.1) and the part of the profile body adjoining behind it being removed; e) attaching an outer connector element on the end face of the horizontal blind frame portion, the outer connector element having at least one profile tongue (41, 42) rising up beyond the cross section of the horizontal blind frame portion; f) placing the vertical blind frame portion onto the horizontal blind frame portion, the profile tongue (41, 42) of the outer connector element being pushed in between locking ridges on the outer circumferential surfaces of the vertical blind frame portion and g) connecting the blind frame portions (10, 20) by means of in each case an angle connector element, which is placed onto the inner rebate faces (14, 24) and is screwed to them;