Yong Yan, My son 14 months is on 0.1 ml Florinef tabs twice a day because very young children need and waste more salt I guess. Have you tried adding some table salt to the water. My son loves that. He will drink 150 to 200 ml / 30 minutes. from a cup. He is also very large for his age though. Maybe your daughter might be craving salt and this is her way of telling you. I add a few shakes from our salt shaker to a cup (or bottle) of water, milk, or juice. Hope this helps.