A child stroller frame comprising: a first and a second frame portion , the second frame portion having a front end and a rear end, the front end of the second frame portion being pivotally connected with the first frame portion ; a pivoting part having one end fixedly connected with a rear wheel support member and another end pivotally connected with the rear end of the second frame portion ; and a linkage movably coupling the first frame portion to the pivoting part , the linkage having an intermediate portion pivotally connected with the second frame portion , whereby the first frame portion and the rear wheel support member are movably linked for folding in a concurrent manner toward the second frame portion ; characterized in that the linkage includes: a first bar assembly respectively connected pivotally with the pivoting part and the second frame portion , the first bar assembly including a first bar pivotally connected with the second frame portion , wherein the first bar assembly , the pivoting part and the second frame portion form a first bar linkage portion; and a second bar assembly respectively connected pivotally with the first bar and the first frame portion , wherein the second bar assembly , the first bar , the first frame portion and the second frame portion form a second bar linkage portion. a first and a second frame portion , the second frame portion having a front end and a rear end, the front end of the second frame portion being pivotally connected with the first frame portion ; a pivoting part having one end fixedly connected with a rear wheel support member and another end pivotally connected with the rear end of the second frame portion ; and a linkage movably coupling the first frame portion to the pivoting part , the linkage having an intermediate portion pivotally connected with the second frame portion , whereby the first frame portion and the rear wheel support member are movably linked for folding in a concurrent manner toward the second frame portion ; characterized in that the linkage includes: a first bar assembly respectively connected pivotally with the pivoting part and the second frame portion , the first bar assembly including a first bar pivotally connected with the second frame portion , wherein the first bar assembly , the pivoting part and the second frame portion form a first bar linkage portion; and a second bar assembly respectively connected pivotally with the first bar and the first frame portion , wherein the second bar assembly , the first bar , the first frame portion and the second frame portion form a second bar linkage portion. a first bar assembly respectively connected pivotally with the pivoting part and the second frame portion , the first bar assembly including a first bar pivotally connected with the second frame portion , wherein the first bar assembly , the pivoting part and the second frame portion form a first bar linkage portion; and a second bar assembly respectively connected pivotally with the first bar and the first frame portion , wherein the second bar assembly , the first bar , the first frame portion and the second frame portion form a second bar linkage portion. <EOS>