A method for pour concrete with portal crane combined with GPS position technology features that on that basis of portal crane and main control computer, the surveying and map system plans concrete pour area according to the area and elevation of concrete pouring area and forms pouring area network, and calculates pouring route plan. The grid pouring coordinates of the pouring area network 4 are set to A (X, Y, Z). The GPS module 2 is installed on the automatic door bunker 1 located at the end of the gantry crane sling, and the position coordinates A1 (X1, Y1, Z1) of the automatic door bunker1 are obtained in real time. The host computer of the control room displays the running direction of the position coordinates A1 (X1, Y1, Z1) of the automatic door bunker 1 and the distance from the next pouring area target. The invention has the function of automatic positioning. So as to save a great deal of manpower and reduce the cost. But also can improve the precision of movement and the pouring efficiency. Safe and reliable, construction effect is very good, suitable for promotion and application.