Fish medicine spreading device

The invention relates to a fish medicine spreading device. The device effectively solves the problems that existing dosing equipment is complex in dilution process operation, and fish poisoning is caused due to the fact that the concentration of fish medicine is too high in the process that the fish medicine permeates into the surface of water. According to the technical scheme, the device comprises a closed rectangular cavity, the left side and the right side in the cavity are each provided with a baffle attached to the inner wall of the cavity and sliding leftwards and rightwards, the two baffles are fixedly connected through multiple sets of tension springs, multiple spray pipes are vertically and evenly distributed at the left side and the right side of the cavity at intervals, and multiple spray heads are evenly distributed at the upper ends of the spray pipes at intervals along the axes of the spray pipes. A first one-way valve is arranged on each spray head, a funnel is arrangedat the upper end of the