In this study, CiteSpace and VOSviewer softwares were used to analyze the publications on the subject of ammonium removal from groundwater based on Web of Science (WoS) database and CNKI database, to explore the status quo and future research perspective in the past three decades. The bibliometric analysis results showed that the number of published papers has continued to increase since 2000, and China and USA have published more papers on the subject. China University of Geosciences was the institution with the largest number of published papers. At present, research focused on the removal methods, including adsorption, anammox, and nitrification /denitrification. The relevant research on the ammonium in groundwater mainly targeted those in shallow aquifers and hyporheic zones. In the future, more efforts should be made to develop new adsorbent and bioremediation technologies such as nitrification/denitrification processes.