The invention discloses an improved dip pen with a replaceable point. The improved dip pen comprises a pen rod, a clamping sleeve, a pen point set, a pen cap and an ink suction device. A first installation cavity is formed in the pen rod and matched with the clamping sleeve. The clamping sleeve is provided with a handhold part, a second installation cavity is formed in the handhold part in a penetrating mode, a first connecting part is arranged below the handhold part and matched with the pen point set, and a second connecting part is arranged below the first connecting part and matched with the first installation cavity. The pen point set is provided with an ink guide assembly, the pen point is arranged above the ink guide assembly, an ink guide tube is arranged below the ink guide assembly and matched with the ink suction device, and a sealing sleeve is arranged at the connecting end of the ink suction device and the pen point set. The pen cap is matched with the pen rod. Due to the detachable pen point, it is avoided that a whole pen is scrapped once a pen point is fractured or damaged, and resources are saved; the ink suction device supplies ink, and thus it is not needed to dip the pen with ink frequently in the writing process.