Pseudocysts of the auricle, also known as purulent chondromalacia, should be treated immediately once they are found to have purulent chondromalacia of the auricle, and can be cured early with reasonable treatment without posterior deformity. The clinical manifestations of auricular pseudocysts are as follows, and patients should pay attention to the identification. 1.The ventral side of the auricle has a hemispherical elevation with clear boundaries, normal skin color, hard or fluctuating sensation, no pressure pain, and may have swelling, itching and burning sensation. 2. The puncture may draw out yellowish or blood-water-like fluid, which recurs soon after drawing. How to diagnose auricular pseudocysts? 1. Diagnostic points: (1) Most often seen in adult males, often unilateral. (2) No obvious cause, spontaneous growth. It is also seen in those whose auricle is mechanically stimulated and affects local circulation. (3) Occasionally, a limited painless auricular bulge is found, which gradually increases in size and may have swelling, itching and burning sensation. (4) Examination reveals a hemispherical cystic bulge, often in the anterior part of the auricle unilaterally, especially in the anterior upper part, with the triangular fossa of the auricular cavity or navicular fossa being the most common; there is no pressure pain when touched, the skin has normal color, elasticity or fluctuating feeling, and the surrounding boundary is clear; puncture can draw out yellowish plasma fluid. Among them, protein is abundant, and bacterial culture shows no bacterial growth. If the fluid is not treated, it will accumulate again soon after being extracted. 2. Pathological examination: the tissue levels from skin to cyst wall are: skin, subcutaneous tissue, perichondrium and cartilage layer, and fluid accumulation is between cartilage. The lining of the cyst wall, i.e. the cartilage layer, is covered with fibrin layer without epithelial cell structure, which can be distinguished from true cysts. 3.Differential diagnosis: auricular purulent inflammatory symptoms are heavy, with progressive persistent ear pain, which may be accompanied by systemic symptoms; examination shows auricular redness, thickening, and obvious tenderness. 1. True cyst The cyst wall is lined with epithelial covering. 2. Transmission examination in the dark room of hematoma, the swelling is not translucent.