A game table assembly structure includes a table frame and a table face board, the table frame is composed of two pairs of sideboards. Four connection boards are disposed on top edges of the sideboards. At least one support board is disposed in the table frame with two ends connected with a pair of sideboards. The top edge of the support board is higher than the connection boards. Four connecting boards are connected under the bottom face of the table face board and define a locating space therein. When assembled, the table face board is placed on the table frame with the connecting boards and the connecting boards up and down corresponding to each other for connection, the top end of the support board fitted in the locating space. The table face board can be easily located on and assembled with the table frame.