Formaldehyde can cause many symptoms in children, the more common ones are skin symptoms, respiratory symptoms, eye symptoms, etc.. Formaldehyde is harmful to the human body and mainly exists in newly bought furniture and other materials, so it is necessary to avoid excessive inhalation of formaldehyde in daily life. 1. skin symptoms: children staying in the formaldehyde environment for a long time will cause local skin irritation and even lead to allergic reactions, such as causing skin rashes, itching, and even possible local breakouts and infections. 2. respiratory symptoms: children inhaling large amounts of formaldehyde will attack the respiratory tract, thus causing a dry cough, chest tightness, shortness of breath and other symptoms. If the child is allergic to formaldehyde substances, there is also a possibility of edema in the throat, or even pulmonary edema, resulting in breathing difficulties. Similar situations require immediate medical attention, do not delay treatment; 3, eye symptoms: formaldehyde is an irritant gas, will generally also affect the eyes, causing children’s eyes dry, itchy and so on, so you need to get out of the environment with formaldehyde as soon as possible, such symptoms can usually be alleviated. In addition, children inhaling formaldehyde for a long time will lead to the inhibition of bone marrow hematopoietic function, thus causing anemia in children, and in serious cases, there may even be a reduction in platelets, red blood cells and white blood cells, which can lead to bone marrow abnormalities and even leukemia. If you just renovate the house or newly bought furniture, you need to open the ventilation for a period of time, you can also carry out formaldehyde testing, the index qualified before moving in, so you can try to avoid the damage caused by excessive formaldehyde content.