Ⅱ～Ⅲ°营养不良在农村地区尚较常见,危害极其严重,并有水、电解质紊乱时,治疗常感棘手,稍有不慎,即可导致患儿死亡。本文结合我科收治的50例本病患儿,治疗时充分认识其病理生理特点,准确估计脱水程度,严格掌握输液总量和速度。注意脱水性质,并对脱水程度估计的方法和注意事项以及具体实施有诸多体会。强调补液不可过多、过快,一日总量宜均匀地于24小时输入,本文在纠正低钾、低钠、低钙的问题 Ⅱ ~ Ⅲ ° malnutrition is still more common in rural areas, the extremely serious harm, and water, electrolyte disorders, the treatment often feel thorny, careless, you can lead to death in children. This article combined with our department admitted 50 cases of children with this disease, fully understand the pathophysiology of its treatment, accurate estimates of dehydration, strictly control the total volume and speed of infusion. Attention should be paid to the nature of the dewatering, and there is much to be learned about the methods and precautions for estimating the degree of dewatering. Emphasize that rehydration can not be too much, too fast, the total amount of the day should be evenly input in 24 hours, this paper to correct low potassium, low sodium, low calcium