The invention discloses a reel sprinkling irrigation machine capable of synchronously applying fertilizers or spraying pesticides. The reel sprinkling irrigation machine comprises a reel sprinkling irrigation machine body (1) and a dissolved fertilizer or dissolved pesticide supply device (2). The reel sprinkling irrigation machine body comprises a water turbine case (11) and a pressure water source pipeline (12); the dissolved fertilizer or dissolved pesticide supply device comprises a water inlet pipeline (21), a solution mixing tank (22), a fertilizer or pesticide adding device (23), a stirring device (24), a solution output pipeline, a solution output pump (25), a solution overflow valve, a solution pump-out pipeline, a solution backflow pipeline, a solution output flow regulating valve (26), a solution output flow meter (27) and a dissolved fertilizer or dissolved pesticide supply electric control device. The reel sprinkling irrigation machine capable of synchronously applying the fertilizers or spraying the pesticides has the advantages that resources can be saved, the labor cost can be reduced, the reel sprinkling irrigation machine can bring convenience for adjusting proportions of the fertilizers or the pesticides to sprinkling irrigation water as needed and is particularly applicable to applying the fertilizers or spraying the pesticides while crops are subjected to sprinkling irrigation on a large area, and mechanisms are flexibly arranged.