Disclosed is an ingot manufacturing apparatus that includes: a chamber; a crucible which is disposed within the chamber and has a melting zone where silicon particles are melted; an inner wall which is disposed within the crucible and has a growth zone where an ingot grows from molten silicon introduced from the melting zone; a feeding part which supplies the silicon particles and sweeping gas to the inside of the chamber; and a suction part which surrounds the feeding part and discharges the sweeping gas supplied through the feeding part to the outside of the chamber.