A support structure for tablet display apparatus includes a support member and a connection assembly. The support member has a first end section and a second end section opposite to the first end section. The first end section is connected with the connection assembly via an angle adjustment seat, whereby the connection assembly can be rotated or tilted relative to the angle adjustment seat and located. The connection assembly is formed with a receiving space for receiving a tablet display apparatus. The second end section of the support member is pivotally connected with a base seat. Accordingly, the tablet display apparatus can be rotated and tilted by different angles and supported in an inclined position in adaptation to different situations and requirements.