No-drill window treatment mounting system and no-drill window treatment

A no-drill window treatment mounting system, comprising:

• a window treatment bracket rod extending in a first direction and one or two window treatment bracket connectors adaptively connected to an end portion of the window treatment bracket rod, wherein the window treatment bracket connector comprises:
• a mounting housing, wherein the mounting housing is adaptively connected to the window treatment bracket rod, and is provided with a mounting space that extends away from the window treatment bracket rod in the first direction and that communicates with outside;
• a support connecting assembly, wherein the support connecting assembly is accommodated in the mounting space in a relative sliding manner in the first direction, and has a first end extending out of the mounting space and an opposite second end provided with a first pushing surface obliquely oriented relative to the first direction;
• and
• an operation connecting assembly, wherein the operation connecting assembly is mounted in the mounting housing, has a first end configured as an operation end and an opposite second end provided with a second pushing surface in pushing fit with the first pushing surface, and is provided with a speed-reduction transmission structure extending in a second direction intersecting with the first direction, whereby the second pushing surface moves relatively in the second direction.