Foam mixer

The utility model relates to the technical field of fire-fighting foam spraying and particularly relates to a foam mixer. The foam mixer structurally comprises a foaming connecting member, a foam mixing drum and a foam generating net, wherein the foam mixing drum comprises a foam inlet end and a foam output end, an air inlet is formed near the foam inlet end of the foam mixing drum, the foam generating net is arranged in the foam mixing drum, the foaming connecting member is externally connected to the foam inlet end of the foam mixing drum, and an orifice communicated to the foam mixing drum is formed in the foaming connecting member. According to the foam mixer, the mixing quality of the foam and the water is improved, the foaming ratio is increased, and the cost is saved.