The invention provides a heat dissipation mechanism. The heat dissipation mechanism comprises a first heat dissipation assembly, a second heat dissipation assembly and a draught fan, the first heat dissipation assembly comprises a first heat dissipation part and a second heat dissipation part. The second heat dissipation assembly comprises a third heat dissipation part and a fourth heat dissipation part, the height of the first heat dissipation part is larger than that of the second heat dissipation part, the height of the third heat dissipation part is larger than that of the fourth heat dissipation part, and the draught fan is at least partially contained between the second heat dissipation part and the fourth heat dissipation part and can cool the first heat dissipation assembly and thesecond heat dissipation assembly. An industrial camera is also provided. Each of the first heat dissipation assembly and the second heat dissipation assembly is provided with a heat dissipation partdistributed in a step shape, heat on at least one heating source is concentrated between the first heat dissipation part and the third heat dissipation part which are quite high, convection heat dissipation is achieved through the draught fan, and the heat dissipation efficiency is high. In addition, the heat dissipation mechanism and the industrial camera are reasonable and compact in structure,high in reliability, good in temperature equalization effect and high in heat dissipation capacity.