Spraying gun having flow rate control effect

A spraying gun, comprising a water inlet connector, a connecting member, an adjusting member, wherein:

• the water inlet connector has an inside formed with a water inlet chamber and a peripheral wall formed with a water outlet hole communicating with the water inlet chamber;
• the connecting member is secured on the water inlet connector and has an inside formed with a water passage and a peripheral wall formed with a water inlet hole communicating with the water passage, the inside of the connecting member is formed with a plurality of detergent channels, the connecting member has an end face formed with a plurality of detergent passages communicating with the detergent channels;
• and
• the adjusting member is rotatably mounted on the water inlet connector and the connecting member and has an inside formed with a stop edge that is movable to align with and seal the water outlet hole of the water inlet connector and a plurality of elongated recessed water connecting portions that are movable to align with the water outlet hole of the water inlet connector and the water inlet hole of the connecting member, the inside of the adjusting member is formed with a catch portion rested on the end face of the connecting member, the catch portion of the adjusting member is formed with a plurality of detergent holes which communicate with the water connecting portions and are movable to align with the detergent passages of the connecting member.