The invention discloses a patient heat preservation cup with a reminding function. The patient heat preservation cup comprises a cup cover, a cup body and an induction cup bottom, wherein the cup cover is arranged at the upper end of the cup body, and the cup body is fixedly installed at the upper part of the induction cup bottom; the induction cup bottom includes a cylindrical shell, and a partition plate is installed in the inner center of the cylindrical shell; and an arched groove is formed in the upper surface of the partition plate, the edge of the arched groove is inlaid with an annularinduction ring, and a free-moving induction ball is arranged in the arched groove. According to the patient heat preservation cup, the heat preservation effect is good, the anti-scalding effect is better, and scalding hands of the elderly can be effectively avoided by the heat preservation cup, the elderly can be reminded to drink water promptly, the amount of drinking water for the elderly is ensured, the occurrence of dehydration problems for the elderly is avoided, so that the life and health of the elderly is ensured, and the patient heat preservation cup is suitable for the current situation of nursing staff in current nursing homes with a relatively tight number of nurses, stable and orderly operation of the nursing homes is facilitated, and promotion and popularization are worthy.