The invention belongs to the field of machinery manufacture, in particular relates to a long-
stroke no-killing well working device of an oil-
water well. The long-
stroke no-killing well working device of the oil-
water well comprises a moving slips, an annular 
blowout preventer, a totally-enclosed 
blowout preventer, an upper half-enclosed 
blowout preventer, a 
lower half-enclosed blowout preventer, a hoisting 
hydraulic cylinder, a 
wellhead four-way, a 
cutting blowout preventer, a fixed slips, a double-disc blowout preventer, a reducing 
flange, an operating rod and a cleaning tool. The long-
stroke no-killing well working device is characterized in that the device also comprises a flexible rod, a multistage 
hydraulic cylinder and a rotation 
flange. The stroke of operation is improved by using the multistage 
hydraulic cylinder and the flexible cylinder, and the moving slips can be rotatably moved by using the rotation 
flange to drive the operating rod and the cleaning tool to clear the 
fouling of an inner wall of the oil 
pipe in a rotating way. The device of the invention also can press a lower oil 
pipe under the condition of no-injection of the oil 
pipe. The device is convenient to operate, greatly improves the working efficiency and is favorable for generalization and application.