A macroporous resin adsorb tower for refining waste salt includes a cylinder body and legs, wherein legs are welded at that lower end of the cylinder body through an elliptical head, an upper manholeis formed at the top end of the cylinder body, an upper butterfly-shaped seal head is arranged on that upper manhole, a material inlet is arranged on that upper butterfly-shaped seal head, a lower manhole is arranged at the bottom end of the cylinder body, a lower butterfly-shaped seal head is arranged on the lower manhole, a material outlet is arranged on the lower butterfly-shaped seal head, a resin inlet and a vacuum outlet are arranged on the side surface of the upper end of the cylinder body, a resin outlet is arranged on the side surface of the lower end of the cylinder body, and an upper water separator and a lower water separator are arranged sequentially from top to bottom in the inner part of the cylinder body. Through the functions of the upper water separator and the lower water separator, the salt solution is adsorbed more thoroughly, the adsorption performance of the whole device is higher, and the adsorption resin can be rapidly replaced through the resin outlet, thus maintaining the high adsorption property of the whole adsorption tower. The invention has simple structure and strong practicability.