The invention discloses a soap strip forming machine. The soap strip forming machine comprises a rack, wherein the upper end of the rack is provided with a fixing seat, one end of the fixing seat is provided with a driving motor and a reduction gearbox, the other end of the fixing seat is provided with a first stirring chamber, the driving motor is located at the upper end of the reduction gearbox, an output shaft of the driving motor is fixedly connected with an input shaft of the reduction gearbox, the first stirring chamber is fixedly connected with the fixing seat through a flange, the first stirring chamber is internally provided with a first stirring shaft, and one end of the first stirring shaft is fixedly connected with the first stirring chamber through a bearing seat. The soap strip forming machine has the advantages that a traditional single-stirring spiral processing mode is changed into a double-stirring spiral processing mode, and two separate stirring chambers are arranged so that materials can be primarily mixed in the first stirring chamber, and the materials can be mixed and squeezed in the second stirring chamber, therefore the processing quality of the two processing steps can be both sufficiently ensured, and the adjustment of the process is more convenient.