A golf bag cart comprises a lower frame including a connecting plate pivotally coupled to a rear wheel stand, a slide element installed at the top of the connecting plate, and an upper carrying base and a lower carrying base for placing and fixing a golf bag; an upper frame coupled to a lower frame and pivotally coupled to the upper carrying base; two front wheel stands coupled to the lower frame and pivotally coupled to the lower carrying base; a link rod module composed of link rod modules and coupled between the upper frame, a slide element and front and rear wheel stands for driving the front and the rear wheel stands or the front and rear wheels to fold or unfold; and a lift switch installed between the upper and lower frames and latched for fixing at a position when the golf bag cart is unfolded.