Choke manifold is a necessary equipment for wel kick control and pressure control of oil and gas well.Under the condition of closing the welhead preventer,the degree of opening and dlosing the throttle valve can be used to control certain casing pressure,maintain the pressure balance in the welor maintain the bottom hole pressure is always sighty greater than the formation pressure,so as to avoid the occurrence of overflow and blowout In addition,when implementing the shut-in,the presure can be relieved through the throttle valve to achieve a soft shut- in,when the pressure in the wellis too high,can be used to release the injection to protect the wellhead.The throtle manifold can also be equipped with control cabinet for remote control.