Learning table lifting height adjusting mechanism and learning table

The utility model discloses a learning table lifting height adjusting mechanism and a learning table. The learning table lifting height adjusting mechanism comprises table legs, a lifting sleeve, a lead screw and a nut assembly. The table legs are hollow pipes; the lead screws are rotatably mounted in the table legs, and the nut assemblies are mounted on the lead screws in a sleeving manner; lifting grooves are formed in the table legs in the height direction; the table legs are sleeved with the lifting sleeves, and the lifting sleeves are fixedly connected with the nut assemblies. The lifting sleeve is connected with a desk plate assembly of the study desk; gear driving mechanisms are further mounted in the table legs; the gear driving mechanism is connected with the screw rod; the gear driving mechanism drives the lead screw to rotate, and the lead screw drives the nut assembly to move up and down so as to drive the table plate assembly to ascend and descend through the lifting sleeve. According to the stud