Toilet spray washing device and smart toilet

A toilet spray washing device, comprising:

• a nozzle cover and a base, both of which are fixed detachably;
• wherein the nozzle cover comprises a first water outlet hole;
• the base comprises a substrate and a base column, and the base column is formed by extending a first predetermined distance from an inner side surface of the substrate in a direction close to a side surface of the first water outlet hole on the nozzle cover;
• the base column comprises a first spray washing mechanism adapted to the first water outlet hole;
• and
• the first spray washing mechanism comprises:
• a first water inlet passage connected to an external water source at one end,
• a fixed groove connected to an other end of the first water inlet passage,
• a sealing element located at a bottom of the fixed groove,
• an aerator for mixing water with air,
• an air intake hood nested inside the aerator,
• a water inlet port nested inside the air intake hood and connected to the first water inlet passage through the fixed groove, and
• a screw for fixing the water inlet port, the air intake hood and the aerator to the fixed groove and forming a screw air intake passage with the aerator, wherein the screw air intake passage is connected to the air;
• and
• the aerator comprises an aerating air intake hole for sucking in air and a first water outlet part adapted to the first water outlet hole, the aerator causes the first water outlet hole to spray a water-air mixture by mixing the water from the water inlet port with the air sucked in by the aerating air intake hole.