A kind of mattress frame structure of adjustable height,It includes: a bedstead pedestal,One passive bedstead and a connecting rod rack,It is that lifting element connection actuation is provided between the bedstead pedestal and passive bedstead,The height for enabling passive bedstead to use by lifting element adjustment,The practicability that lamps structure uses,And between the bedstead pedestal and passive bedstead be with rail rods and the linear displacement state of position-limited rail rod,Increase the accuracy that passive bedstead is gone up and down actuation by lifting element,And the stability of adjustment of displacement is had both,And be between the bedstead pedestal and passive bedstead and link equipped with a connecting rod rack,Make mutually pull support between passive bedstead and bedstead pedestal by connecting rod rack again,It averraged the pressure that passive bedstead surface is born,Have both the smoothness person that structural adjustment uses.一種可調整高度之床墊架體結構,其包含:一床架基座、一被動床架以及一連桿支架,該床架基座及被動床架間係提供一升降元件連結作動,使被動床架能藉由升降元件調整使用之高度,具結構使用之實用性,且該床架基座與被動床架間係以軌道桿與限位軌桿形成線性位移狀態,增添被動床架受升降元件升降作動之準確性,並兼具位移調整之穩定性,且該床架基座與被動床架間係又連結設有一連桿支架,使被動床架與床架基座間能再藉由連桿支架相互拉扯支撐,平均分擔被動床架表面所承受之壓力,兼具結構調整使用之順暢性者。