Sunshade curtain low-noise stable guide sliding block structure

The utility model relates to a low-noise stable guide sliding block structure of a sunshade curtain, which comprises an inserting head part for inserting an extension rod and a guide part connected with a guide piece, and the guide part is integrally formed and positioned on the outer side of the inserting head part; a plurality of elastic protruding heads which are in elastic abutting fit with one side wall or two side walls of the flat cavity of the extension rod are evenly distributed on one side or two sides of the inserting head portion in the inserting direction, the two ends, in the inserting direction, of the elastic protruding heads are connected to the inserting head portion, elastic space is reserved in the middle of the elastic protruding heads in the inserting direction, and a vertically-through clamping hole is formed in the middle of the inserting head portion. A reed which elastically abuts against the upper wall and/or the lower wall of the flat cavity of the extension rod upwards and/or down