As a major type of phagocyte, neutrophils are involved in many physiological and pathological processes that include inflammation, phagocytosis of pathogens, elimination of tumor cells, and removal of necrotic tissue debris, which are closely related to the ion channels in neutrophils. This review discusses various types of ion channels and their roles in neutrophils, which include voltage-gated proton channels, potassium channels, ATP-gated P2X₁ channels and chloride channels. With a focus on the ionic conductance mediated by partial ion channels in neutrophils, the pathological processes of neutrophils mediated by each channel are summarized. Recent findings are discussed from a functional perspective to contribute to selecting therapeutic targets.