An experimental investigation into the instabilities that occur on the edges of liquid sheets formed by the impingement of two capillary liquid jets is conducted. The breakup of the droplets from the edges of the sheet is investigated by using direct visualization. It is found that beadlike formations appear on the edges of the sheet, and they grow until they break up into drops. The instability causing this breakup is referred to as the edge instability. The process of the droplet formation is divided into two stages: the growing stage and the detaching stage. The velocity of the small-sized attached drops on the edges of the sheet is determined, which is assumed to represent the fluid velocity on the edges of the sheet.