The invention provides an adjustable double-roll gap encircling wolfberry picking head used for automatically picking wolfberries according to problems existing in the prior art. The wolfbery picking head comprises a power supply system, a driving system, a picking head shell and main rolling wheels arranged in the picking head shell, and the main rolling wheels comprise a forward-rotating main rolling wheel and a reverse-rotating main rolling wheel which rotate in opposite directions. The picking head further comprises a transmission system and auxiliary rolling wheels, and the auxiliary rolling wheels comprise a forward-rotating auxiliary rolling wheel and a reverse-rotating rolling wheel which rotate in opposite directions. The forward-rotating auxiliary rolling wheel is arranged above the forward-rotating main rolling wheel, and the reverse-rotating auxiliary rolling wheel is arranged above the reverse-rotating main rolling wheel. According to the adjustable double-roll gap encircling wolfberry picking head, by means of a forward spinning turbine, a forward spinning worm, a backward spinning turbine, a backward spinning worm, the main rolling wheels and the auxiliary rolling wheels, fruit collecting work to wolfberry branches is achieved, the wrapping performance to the wolfberry branches is excellent, all-dimensional picking to the wolfberry branches is achieved, and the net fruit bearing rate of wolfberry picking is increased.