When suspecting acute mastitis in women, a routine physical examination should first be conducted, including measuring body temperature to check for any elevation, examining if the breast shape is symmetrical on both sides, and observing any congestion or swelling of the local skin, as well as feeling for any fluctuating sensation upon touch. This fluctuating sensation actually indicates an intensified manifestation of mastitis, resulting in a dense breast. Additionally, check whether the lymph nodes under both armpits are swollen, perform a blood draw to analyze a complete blood count, and understand the blood picture and whether there is an increase in neutrophil classification. If there is a consideration of abscess in the breast, a color ultrasound examination of both breasts should also be conducted. Under ultrasound guidance, aspiration of secretions for culture can be performed, which is informative for understanding the pathogen and guiding future medication use.