Support for adjusting height and angle, and lamp desk composed of same

The utility model discloses a support for adjusting a height and an angle, and a lamp desk composed of the same, which belong to height and angle adjusting devices, and the field of study and office supplies. The support for adjusting the height and the angle is mainly composed of a vertical column 37 connected with a bookcase 1, an upper crank arm and a lower crank arm 2 and 10 with one end hinged with the vertical column 37 respectively, any object 3 hinged with the other end of each of the upper crank arm and the lower crank arm, a ball head rotary arm 120 rotationally connected with the any object 3, a nut 119 screwed with the upper end of the ball head rotary arm 120, a ball socket body 121 in ball connection with the lower end of the ball head rotary arm 120, a ball head inter-frame 123 in ball connection with the ball socket body 121, and a ball head locking screw handle 122. The utility model provides a height and angle adjusting support which is high in load capacity, convenient to adjust, and capable of being connected with any product needing to be used after height and angle adjustments in daily life, thus a user has a comfortable and healthy body posture in the related activities.