The invention discloses an adjustable auxiliary device for tumor clinical treatment. The adjustable auxiliary device comprises a base; roller wheels are arranged at the lower end of the base; a fixedbox body is installed on the base; a lifting box body is installed at the upper end of the fixed box body; a reversing gearbox is arranged on the base at the inner side of the fixed box body and is provided with threaded columns; each threaded column is connected with the interior of a threaded sleeve seat; the threaded sleeve seats are fixedly connected with the lifting box body; a limiting groove is formed in the upper end of the lifting box body and is internally provided with a rotary column; a fluted disc is arranged on the rotary column and is in mesh connection with a worm and gear gearbox; a lifting seat is internally provided with a first sliding seat; the upper end of a first threaded sliding block is connected with a movable seat; a second threaded sliding block is connected with a bed board. The adjustable auxiliary device for tumor clinical treatment is stable in structure and running, convenient to move and use and easy to operate, and can be matched with tumor treatmentequipment for use; the adjustable auxiliary device is convenient to adjust, the height and rotation of the adjustable auxiliary device can be adjusted, and the horizontal and vertical adjustment of the adjustable auxiliary device can be realized along the horizontal direction, so that the adjustment requirements of different treatment devices can be met, and the existing operating requirements canbe met.