Disclosed are a valve needle and an electronic expansion valve having the valve needle. The valve needle is provided with a connecting end and a blocking end that are arranged opposite to each other; the blocking end includes a blocking segment, a first opening segment, and a second opening segment that are sequentially connected in an axial direction; the blocking segment cooperates with a valve port to block the valve port; a cross sectional area of the blocking segment close to the connecting end is greater than a cross sectional area of the blocking segment distant from the connecting end; a cross sectional area of the second opening segment close to the connecting end is greater than a cross sectional area of the second opening segment distant from the connecting end; and a cross sectional area of the first opening segment remains unchanged.