The invention relates to a vibrating tray for conveying and feeding workpieces to automatic mechanical equipment, in particular to a vibrating tray with adjustable feeding output. The vibrating tray comprises a top tray, a spiral slideway of the top tray, a feeding output transition connecting slideway and a slideway support and is characterized in that the feeding output transition connecting slideway comprises a slideway bottom plate fixed with an slideway outer side plate, an inner side moving plate of the slideway and an adjusting device of the inner side moving plate of the sideway; and the inner side moving plate of the slideway is connected with the adjusting device of the inner side moving plate of the slideway. The invention aims to design a vibrating tray with adjustable feeding output for adjusting the transition connecting slideway according the sizes and shapes of the workpieces and realizing conveying of different workpieces by a vibrating top tray. Compared with the prior art, the vibrating tray has the advantages that the manufacturing cost is lowered, the mass production is realized, the matching cost of the automatic mechanical equipment is reduced, the feeding output adjustment is convenient, and the working efficiency is high, etc.