Abstract: A water-tight and air-tight zipper includes two elastically water-tight strips. The water-tight strips have two water-tight layers. Each water-tight layer is individually provided with a tooth row which is sewn on the correlative side thereof. The two tooth rows both pass through a zipper pull and are corresponding to each other, thereby engaging the two tooth rows with each other and forcing edges of the two water-tight strips to be sealed by using the elasticity of water-tight strips and pulling the zipper pull, and then completely air-tight and water-tight. The tooth rows are directly sewn on the water-tight strips, and thus a water-tight and air-tight zipper can be manufactured by a simple manner, thereby substantially simplifying the manufacturing process.