The invention discloses a denitration catalyst sintering method and a device thereof, and relates to a catalyst continuous sintering device and a sintering method using the device. The catalyst continuous sintering device comprises a hot wind generator with catalyst burning modes and a hot wind temperature control device. The sintering method comprises the following steps: subjecting a honeycomb catalyst containing oxidizing active components and organic forming auxiliary agents to a pre-sintering treatment under the introduction of gas-making gas, and then carrying out continuous sintering under a condition that the temperature is higher than that of the pre-sintering area. In the device, even if required gas-making gas with a low oxygen content is provided in a large amount during the sintering process, the catalyst activity degradation due to the high temperature combustion of organic matter binding agent can also be prevented. The provided continuous sintering method can prevent the decreasing of the active components because of the required high temperature heating and reductive gas so as to achieve continuous sintering to obtain high active catalysts. The provided method and device are suitable for making high active catalysts.