The invention provides a combustion chamber base and a combustor. The combustion chamber base comprises a first cylinder wall, a second cylinder wall, a first combustion port and a second combustion port. The second cylinder wall is sleeved with the first cylinder wall. A solution containing cavity is formed by a cavity between the first cylinder wall and the second cylinder wall, and a combustion cavity is formed by a cavity defined by the second cylinder wall. The first combustion port and the second combustion port are communicated with the combustion cavity. The combustor comprises the combustion chamber base. According to the combustion chamber base and the combustor, it is achieved that fuel gas is blown into the combustion chamber from the side edge, and meanwhile the bottom of a hearth is filled with liquid and heated; and the heating area of the bottom is increased compared with a vertical blowing structure, and the heat utilization rate is high. The equipment structure is simple, processing is easy and convenient, and the combustion chamber base and the combustor are especially suitable for generators of absorbing type air conditioner units which are compact in structure and small in space.