Babies make a strong throat to send out uh-uh strange sound may be a normal phenomenon, may also be congenital laryngeal cartilage dysplasia caused by, and may be caused by upper respiratory tract infections. 1. Physiological factors: babies make a strong throat er er strange sound, may be due to the baby’s brain language center and throat muscles are not well developed resulting in the normal phenomenon, this stage of the baby can only make er er sound, this is a normal phenomenon. 2. congenital laryngeal chondrodysplasia: congenital laryngeal chondrodysplasia is a kind of laryngeal tissue is weak and flaccid, the laryngeal tissue collapses during inhalation, the laryngeal cavity becomes small and thus leads to laryngeal tinnitus, if the baby suffers from this disease, there will also be the symptom of the throat to make uh-uh strange sound. 3. upper respiratory tract infection: upper respiratory tract infection, the baby’s throat is congested, edema, and inflammatory secretions, can also lead to the baby appear throat issued uh uh strange sound symptoms. After eliminating the physiological factors, if the baby’s symptoms of the throat er er strange sound persist, please consult a doctor to identify the cause and ask the doctor to deal with it.