A portable beach chair, including a waist ring, four-legged rods, two middle curved rods, two front rods, two rear rods, four ∝-shaped retaining springs, middle chair cloth surface, front chair cloth surface and rear chair cloth surface, waist There are four circular perforations on the side of the ring, the foot bar is punched and bent by a metal round tube, the middle of the foot bar is wavy and curved on the outside with a round hole, and is riveted with the waist ring, there is a transverse slot on the foot bar, and there is a groove in the slot. ∝-shaped circlip, the middle curved rod is formed by pressing and bending a rectangular tube, the front rod and the rear rod are composed of a rectangular front pipe, a flat connecting plug and a flat cover, the middle curved rod, the front rod and the rear rod respectively penetrate into the middle chair On both sides of the cloth surface, the front seat cloth surface and the rear seat cloth surface, the cylindrical connecting plug includes a blind rivet nut and a nylon tubular piece. Through four bolts and four rivet nuts screwed together, the nylon tubular parts of the two middle curved rods are inserted into the tube holes on the top of the four-legged rods, and positioned with four ∝-shaped clip springs, and the two front rods and the two rear rods are threaded through Insert the front and rear ends of the two middle curved rods.