To provide a high-analytical human calorie meter capable of improving the accuracy of measurement of a metabolic calorie measuring device using a chamber and accurately measuring the metabolic calorie in a daily life style.

The pressure inside the chamber 10 is set at the same pressure as of the outside. The calorie meter has a heat exchanger 21 to cool air inside the chamber with chiller water as cooling circulation water, disposed for controlling the temperature in the chamber 10, and an air conditioner 22 for warming air in the chamber 10. An air conditioner 20 with a digital indication adjusting meter 23 is set for switching the control mode of the heat exchanger 21 and the air conditioner 22. The air whose temperature is adjusted by the air conditioner 20 is blown into the chamber 10 by a plurality of ventilation blowers 30.