The breast milk can be expressed by hand, the use of breast pumps. 1. hand extrusion: the specific method is the thumb and the rest of the four fingers relative to each other, C-shaped maneuver to hold the breast, put the hand on the nipple root to extend outward about 2cm. Fingers to the chest wall direction downward pressure, thumb and other fingers relative squeeze breast, and gently to the nipple direction sliding, but the hand does not leave the breast, hand relaxation but do not take away from the breast. Repeat this action, squeeze a few times or change the position after the milk stops flowing so that you are able to squeeze all the milk ducts. 2. Breast pump: Place the breast pump’s suction cup on the breast, use the stimulation mode of the breast pump first, and when you feel a milk burst coming, switch to the sucking mode. When the wave of milk paroxysm passes, then switch back to the stimulation mode. Usually, the sucking time should not be more than 15-20 minutes. The basic principle of any milking lies in stimulating the release of milk, allowing it to flow from the milk ducts to the small holes in the nipple and then expressing it. When you are unable to breastfeed or if your milk is rising, you can express the milk by hand or with a breast pump, milking for 15 minutes on each breast, alternating between the two sides.