1.5-year-old baby can properly soak in the hot spring. But the baby’s age, resistance is relatively weak, and its own thermoregulatory center is not fully developed, the body surface area is relatively large, the body temperature is susceptible to the influence of the external environment temperature, so when soaking in the hot spring generally need to pay attention to the following matters: 1, the temperature is appropriate: before soaking in the hot spring must first try the water temperature, not too low and not too high. To gradually transition from low water temperature to high water temperature, leaving sufficient time for vasodilation; 2, control time: not too long, it is recommended not to exceed 15 minutes, so as not to soak in the hot spring for a long time, resulting in excessive heat or water evaporation, dehydration or shock and other states; 3, adjust the posture: try to let the baby take a sitting position or do foot therapy. Ensure that the head, neck and chest should be exposed to the water to avoid water pressure on the chest, resulting in a feeling of chest tightness and suffocation. If the baby is young, it is best to use a swimming ring to ensure the safety of the baby; 4, check the physical condition: if the body is in a state of fatigue, hunger or just eaten, it is not recommended to immediately soak in the hot spring, which can easily lead to hypoglycemia or vomiting baby. If the baby is in the acute phase of the cold, it is not recommended to soak in the hot spring, the body’s resistance is weaker at this time, and if the baby is dehydrated and oxygen deprived after soaking in the hot spring, it is easy to lead to symptoms such as dehydration.