An external punching-free mounting mechanism for a curtain, comprising a cross beam exposed outside a window frame, a first mounting assembly and a second mounting assembly supporting the cross beam in the window frame in a cooperative way, and the first mounting assembly and the second mounting assembly are oppositely connected to the cross beam; the first mounting assembly and the second mounting assembly can slide in the length direction of the cross beam in the unlocking state; the first mounting assembly and the second mounting assembly are fixed to the cross beam in the locking state; the first mounting assembly and the second mounting assembly are both connected with an auxiliary member used for clinging to the inner frame edge of the window frame. The arrangement of auxiliary members on the first mounting assembly and the second mounting assembly increase the contact area of the inner frame edge of the window frame and the mounting assemblies, making the overall mounting structure firmer and more stable, and preventing curtain detachment during use, thus fulfills consumers' requirements.

An external punching-free mounting mechanism for a curtain, comprising a cross beam exposed outside a window frame, a first mounting assembly and a second mounting assembly supporting the cross beam in the window frame in a cooperative way, and the first mounting assembly and the second mounting assembly are oppositely connected to the cross beam; the first mounting assembly and the second mounting assembly can slide in the length direction of the cross beam in the unlocking state; the first mounting assembly and the second mounting assembly are fixed to the cross beam in the locking state; the first mounting assembly and the second mounting assembly are both connected with an auxiliary member used for clinging to the inner frame edge of the window frame. The arrangement of auxiliary members on the first mounting assembly and the second mounting assembly increase the contact area of the inner frame edge of the window frame and the mounting assemblies, making the overall mounting structure firmer and more stable, and preventing curtain detachment during use, thus fulfills consumers' requirements.