The invention discloses a safe and convenient screw extrusion juicer which comprises a machine base with a motor, a squeezing cavity mounted on the machine base and a screw placed in the squeezing cavity, wherein the squeezing cavity comprises a squeezing cavity body a juice outlet and a residue outlet are formed in the squeezing cavity body a feed inlet and a feeding channel connected with the feed inlet are formed in the squeezing cavity the feeding channel comprises an upper end opening and a lower end opening connected with the feed inlet a rotatable turnover object placement platform is movably arranged at the upper end opening the rotating center of the turnover object placement platform penetrates through the upper end opening transversely the turnover object placement platform is used for placement of materials and can rotate around the rotating center in any direction and the materials are enabled to enter the feeding channel by rotating the turnover object placement platform by 60 degrees at least. Therefore, continuous juicing is realized, high safety in use is ensured, and accidental injury of a user is prevented meanwhile, pretreatment of fruits and vegetables is not required, so that user operation is reduced, the user can use the juicer conveniently, and convenience for the user is increased and the service life of the juicer is prolonged.本發明公開一種安全方便的螺桿擠壓榨汁機,包括具有電機的機座、安裝於機座上的壓榨腔、置於壓榨腔內的螺桿,所述壓榨腔包括壓榨腔本體,所述壓榨腔本體設有出汁口和出渣口,所述壓榨腔設有進料口及與進料口連接的進料通道,所述進料通道包括上埠及與進料口連接的下埠,所述上埠活動設置有可旋轉的翻轉置物台,所述翻轉置物台的旋轉中心橫貫上埠,所述翻轉置物台用於放置物料且可繞旋轉中心任一方向旋轉。這樣可實現連續榨汁,還保證了使用時的安全性,防止誤傷用戶;同時,無需對果蔬進行預處理,減少了用戶操作,方便用戶使用,提升了用戶的便利性;還提升了機器的使用壽命。1‧‧‧機座2‧‧‧壓榨腔21‧‧‧出汁口22‧‧‧出渣口23‧‧‧進料口24‧‧‧進料通道241‧‧‧上端口242‧‧‧下端口243‧‧‧旋轉孔25‧‧‧壓榨腔本體3‧‧‧擠壓螺桿4‧‧‧置物台5‧‧‧安裝座6‧‧‧物料