Cell culture method, product producing method, and cell culture device

A cell culture method comprising:

• using a culture vessel which contains a cell suspension;
• and
• discharging a gas including 30% by volume or more of oxygen into the cell suspension from a sparger disposed in the culture vessel to culture the cells,
• wherein a plurality of spargers are included as the sparger,
• an average hole diameter of a gas discharge portion in each of the spargers is 1 m or more and 300 m or less, and
• a surface area A (m2) of the gas discharge portion in the sparger, a volume X (m3) of the cell suspension in the culture vessel, and a flow rate Q (m3/min) of the gas that is discharged from the sparger satisfy Expression 1-1, Expression 1-2, and Expression 1-3, wherein
• 0.004≤A/X≤0.025, Expression 1-1
• X≥0.5, and Expression 1-2
• 0.001≤Q/X≤0.05 Expression 1-3
• wherein a cell concentration in the cell suspension is 4×107 cells/mL or more.