The invention provides a hydrogen-enriched water cup having separate upper and lower bodies, belonging to the technical field of articles for daily life, for solving the technical problems that for the existing hydrogen-enriched water cup, warm or cold water inside the existing hydrogen-enriched water cup can not be immediately prepared into hydrogen-enriched water, meanwhile, during use, the preparation of small amount of hydrogen-enriched water is not available, but water in the whole container is prepared once preparation is carried out, and thus hydrogen-enriched water is easily oxidized.The hydrogen-enriched water cup having the separate upper and lower bodies comprises the upper cup body, the lower cup body, a middle cover I, a middle cover II and an electrolytic bath core, whereina cavity is formed between the middle cover I and the middle cover II, the electrolytic bath core is positioned in the cavity and communicates with the upper cup body, a water passing pipe is furtherarranged in the cavity, a through water passing hole is formed in the end face of the middle cover I, by rotating the middle cover I, the lower end opening of the water passing hole and the upper endopening of the water passing pipe are in the communication state or the closed state. For the hydrogen-enriched water cup having the separate upper and lower bodies, water in the lower cup body can beimmediately poured into the upper cup body, the poured amount of water can be controlled, the prepared water is drunk at once, and thus oxidation of the hydrogen-enriched water is avoided.