The only way for a girl to do a mammogram in the lying position is by palpation. The most suitable time for girls to do breast examination is about one week after menstruation. When palpation is combined with sitting and lying position, the left arm is raised, the hand is placed behind the head, the right hand examines the left breast, and palpation is carried out according to the order of outer upper-outer lower-interior lower-interior upper-armpit-nipple. Palpation includes lump (size, hardness, mobility, adhesion), localized glandular thickening (location, extent, texture, tenderness), nipple (with or without overflow), axilla and supraclavicular fossa (with or without enlarged lymph nodes), and so on. If there is any breast discomfort, it is recommended to consult a doctor for examination and treatment as prescribed by the doctor after making a clear diagnosis.