The invention discloses a control logic method for continuous type ascending-and-descending platform oil cylinders. The upper ascending-and-descending oil cylinder and the lower ascending-and-descending oil cylinder are controlled to extend and contract, the extending and contracting speeds of the upper ascending-and-descending oil cylinder and the lower ascending-and-descending oil cylinder are controlled, and an upper plug pin and a lower plug pin are controlled to be inserted and pulled out, so that a pile leg is controlled to act continuously; and in addition, the operation speed formed when the pile leg acts is controlled. According to the control logic method adopted for the continuous type ascending-and-descending platform oil cylinders, the requirements for the power and speed required when the pile leg acts continuously are considered comprehensively, and in particular, switching is conducted in the stress switching process of an upper annular beam and a lower annular beam, sothat control precision and work efficiency of an ascending-and-descending system are greatly improved.