It is not normal to have pain in the ears when lying on your side, so you need to analyze whether the pillow is hard to compress the ears, or whether it is caused by disease factors. 1. own reasons: the ears themselves are not protected by a lot of soft tissue, only skin and auricular cartilage. If you sleep on a pillow that is particularly hard and compresses your ears for too long when you lie on your side, you may form pain and numbness in your ears after squeezing. Especially the middle-aged and elderly, the auricle itself is not particularly good microcirculation, after prolonged compression may cause chondromalacia of the auricle; 2, disease causes: may suffer from ear diseases, such as external auditory cysts, otitis externa, otitis media and local lymph node enlargement. Lying on your side can cause ear pain, and you may also have painful auricular traction in general. When sleeping, it is recommended to avoid sleeping on a pillow that is too hard and to turn over and change positions in time to avoid prolonged pressure on one ear. If there is inflammation in the ear and the pain is unbearable when lying on the side, it is best to seek medical attention and further treatment after a clear diagnosis through examination.