The present invention relates to a long distance continuous injecting device for an animal comprising: a front injection stand in which an injection needle is inserted and combined in the front while having a pipe form long back and forth, including a combination socket in the rear, and in which a chemical liquid supply pipe connected to the injection needle is installed inside； a chemical liquid supply unit including an injection syringe inserted and combined inside the combination socket and in which the front end is connected to the rear end of the chemical liquid supply pipe, in which a piston housing is connected and installed in the rear of the injection syringe, in which a chemical liquid installing device on which a chemical liquid bottle is mounted is installed to communicate each other in the upper part of the front of the injection syringe, and for supplying a chemical liquid from the chemical liquid bottle to the injection syringe； a piston unit including a piston stand inserted inside through the opened rear of the injection syringe, including a position adjusting stand located inside the piston housing in the rear of the piston stand, in which a fixed installation stand is connected and mounted in a straight line in the rear of the position adjusting stand, and in which a chemical liquid control knob combined to be moved back and forth in the outer circumferential surface of the position adjusting stand to adjust an amount of injection of a chemical liquid is installed； and a chemical liquid injection unit including a rear connection pipe connected to the rear of the piston housing, in which a rear push stand is inserted in a straight line inside the rear of the rear connection pipe to be installed to be moved back and forth by a predetermined distance while elastically supported by an elastic spring, and in which the fixed installation stand of the piston unit is connected and installed in the front end of the rear push stand.본 발명은 전후로 긴 파이프형상으로 전방에는
