Drink more water properly, and closely observe the symptoms of colds, coughs and runny nose of the baby who is one and a half years old. This is a case of respiratory tract infection. First, closely observe the general conditions of the baby, such as mental status, cough symptoms, diet, urine and urine. If the child is generally in good condition with mild symptoms, he can drink more water and observe closely. If the children's symptoms gradually worsen, they can be treated with appropriate oral drugs. The most commonly used drugs are Chinese patent medicines for antiviral treatment of colds and coughs, such as Bairui Granules, Anerning Granules, Xiaoer Feiqiao Qingre Granules, and Pudilan Xiaoyan Oral Liquid, which are all OK. The above scheme is only for reference. Please use the specific drugs under the guidance of professional doctors according to your own conditions.