To provide a combustion chamber of a wooden-pellet stove that can provide comfort by combustion flame of a wood material.

This combustion chamber 3 of a wooden-pellet stove includes a fire pot 12 for burning wooden-pellet fuel and a peripheral wall 3b for setting the pot 12 inside to define internal and external gaps airtightly, the wall 3b having a pellet supply port 3c for supplying the pellet fuel to the fire pot 12 and vent holes 21a and 22a for communicating a compulsory ventilating part for supplying and exhausting combustion air. In front of the wall 3b, a front opening 3a is formed by being closed with a transparent plate for defining the inside and the outside, allowing viewing inside therethrough, and the plate 5 of the port 3b is formed of at least partially a magnifying lens 6 having a focal length being over the firing position of the pot 12.