Palpation of breast nodules can be detected by touching the belly of one’s fingers. Self-palpation is performed with the body in a sitting position, with the back against the back of a chair, using the belly of the index finger, middle finger and ring finger to touch, not pinching with the hand, as the glands are arranged in a radial pattern and are prone to hard lumps when pinched with the hand. Touch the left breast with your right hand and the right breast with your left hand, following the direction of the upper outer breast, lower outer breast, lower inner breast, upper inner breast, nipple, and armpit. If you find a nodule in the breast, determine the size, location, and mobility of the nodule, and then go to a regular hospital in a timely manner so that the doctor can confirm the diagnosis by palpation or ultrasound. The final diagnosis of a breast nodule is a biopsy, and it is recommended that you go to the hospital every year for a regular breast checkup so that the disease can be detected and treated early.