The utility model discloses a casing head with adjustable hydraulic drive height, including the casing head casing, slide kit has the casing head inner tube in the casing head casing inner chamber, isused for on the interior round platform rank on casing head casing upper portion sitting putting casing hanger, and casing head casing lower part excircle thread face and lock sleeve threaded connection protrudingly in the lock sleeve lower extreme are put on the excircle step of casing head inner tube along sitting, and it has the annular to open between the excircle step of protruding edge andcasing head inner tube in the lock sleeve, installs C type locking ring in this annular, install the housing screw in the radial hole of lock sleeve lower extreme, the housing screw inwards passes radial hole top at C type locking ring excircle. The utility model discloses a device, compact structure, reliable operation, convenient to use.