There is a soft bulge in the clavicular fossa consider lymph node enlargement, fat hyperplasia, soft tissue infection. 1. Enlarged lymph nodes: for example, lymphadenitis, there will be pain in the clavicular fossa, most of them are single swellings with pressure pain, which can be clearly diagnosed by ultrasound. Tumor lymph node metastasis, usually multiple swellings with unclear boundary and irregular pattern. 2. Fat hyperplasia: when fat hyperplasia can cause soft lumps at the clavicular fossa without obvious pressure pain, some of them will form lipoma, which need to be surgically removed. 3. Soft tissue infection: soft tissue gap infection in the neck can appear localized soft bags, skin redness, swelling and fever, under the guidance of the doctor to apply anti-inflammatory drugs such as oral roxithromycin capsules, topical mupirocin ointment, etc., serious need to be incised and drained. The clavicular fossa has a soft bag, it is best to go to the hospital to check a clear diagnosis for further treatment.