Squeezing a boil is equivalent to the process of draining the pus, and the boil will heal after the pus or pus plug is discharged. However, squeezing and draining of pus can easily lead to the spread of infection, and squeezing and draining of pus is generally contraindicated. A boil is an acute purulent inflammation of a single hair follicle and its surrounding tissues, mostly caused by Staphylococcus aureus infection. The early stage of the boil is characterized by redness, swelling, pain and hardness, at which time the symptoms can be relieved by applying hot compresses and ichthyol ointment, etc. At a later stage, a yellowish-white pus plug will appear on the top of the boil, accompanied by fluctuating sensation, which can be punctured to drain the pus. Pus or pus plug is a mixture of tissue pus secretion, hair follicle secretion, inflammatory material, etc. After the pus or pus plug is discharged, the inflammation of hair follicle will gradually subside and the boil will gradually heal. However, it is generally contraindicated to drain the pus by squeezing, as squeezing can lead to the spread of infection, and squeezing facial boils can even lead to intracranial infection. It is recommended that after disinfecting the lesion with iodine povidone, the tip of a knife or a needle should be used to pick out the pus plugs after piercing the skin, and after picking out the pus plugs, wet gauze with iodine povidone can be used to apply wet compresses. If fever, generalized discomfort, headache and other symptoms occur, you should also consult a doctor, and medication should be used under the guidance of a physician.