The invention discloses a press-fitting and demolding mechanism for screwdriver bits and sleeves. The press-fitting and demolding mechanism comprises a base, moulds, a press-fitting mechanism, a demoulding mechanism and a transferring mechanism, the transferring mechanism comprises a rotating plate, the press-fitting mechanism comprises a installing frame, a press-fitting air cylinder and a press-fitting plate, when the rotating plate drives each mould to be just under the press-fitting plate, the press-fitting air cylinder drives the press-fitting plate to move downwards so as to press-fit the sleeve and the head in each mould, and the demoulding mechanism comprises a material taking frame, a first material taking air cylinder, a second material taking air cylinder and an electromagnet. After being press-fitted, the screwdriver bits and the sleeves are sucked out of the moulds through the electromagnet, then the screwdriver bits and the sleeves are placed into a finished product frame through the cooperation of the first material taking air cylinder and the second material taking air cylinder, and therefore the screwdriver bits and the sleeves do not need to be taken out manually, manual operation is reduced, and labor cost is saved.