The baby’s red chin needs to be discerned as to which disease it is and treated for the cause, as follows: 1. If it occurs suddenly later in life, it may be localized allergic dermatitis or eczema, while on top of the redness may be accompanied by varying degrees of exudation or inflammatory reaction. This can be topical anti-allergic drugs, such as topical clofibrate cream or topical glucocorticoid cream, can be topical dinaide cream or hydrocortisone butyrate cream, etc.; 2, of course, there may be inflammation due to bacterial infection, especially skin soft tissue infection, this may appear local red, swollen, hot, painful symptoms, the need for topical antibiotics, such as erythromycin ointment or Fusidic acid cream, etc.