The main causes of hidden pain in the lower left chest are the following: 1, angina pectoris, need to improve ECG, cardiac ultrasound, etc. as soon as possible to clarify whether there is a heart problem and whether there is a manifestation of myocardial ischemia; 2, trauma, trauma to the lower right chest, which can easily lead to trauma to the skin, liver injury, etc., can cause hidden pain; 3, chronic pleurisy, costochondritis, costochondritis of the lower right chest, chronic pleurisy can all cause hidden pain in the lower right chest 4, gallbladder diseases, such as cholecystitis, minor gallbladder stones, etc., can cause hidden pain in the right lower abdomen, which can be clearly diagnosed by improving abdominal ultrasound; 5, skin-related diseases, such as herpes zoster, eczema, etc., can cause pain in one side of the chest wall, but the pain is usually more intense.