Intelligence toy used with graph cards

An intelligence toy used with graph cards, comprising:

• a base (1) which is a quadrangular bottom plate, including three connected and upward vertical sidewalls (101) on rear, left and right sides thereof, and a plurality of locating holes (12) in a lower part of an inner wall of the three sidewalls (101);
• a building block base (2) which is a quadrangular top plate, including three connected and downward vertical sidewalls (201) on rear, left and right sides thereof;
• wherein the building block base (2) can be placed on the base (1) and is enclosed by the three sidewalls (101) of the base (1);
• the three sidewalls (201) of the building block base (2) are vertically placed on the bottom plate (10) and retain a space between the top plate (20) and bottom plate (10) to form a holding space (23);
• the bottom plate (10) and top plate (20) form an opening (231) disposed at front sides thereof;
• the three sidewalls (201) of the building block base (2) having an outer side is attached to an inner side of the three sidewalls (101) of the base (1) and the outer side of the three sidewalls (201) includes a plurality of clamping blocks (22) configured to fix into the locating holes (12);
• the top plate (20) has a crosswise spread bracket (25), which forms twenty five perforations (21) arrayed in square matrix;
• a building block set (3) being composed of six building blocks (A˜F) and each building block be composed of three to five block units (30), wherein the block units (30) are horizontally and vertically combined, and every two block units (30) are connected by a narrow neck (32);
• the building block set (3) has twenty five units, which can be laid in the twenty five perforations (21) of the building block base (2);
• the six building blocks (A˜F) include a lug (31) on each outer wall of the block unit (30), which allows each block unit (30) to fall into the perforations (21) and be blocked by the bracket (25) without falling off;
• and
• at least one graph card (4) which is a quadrangular card and is placed on the bottom plate (10) in the holding space (23), including at least one mark (41) printed on a surface thereof, wherein the mark (41) corresponds to the perforation (21) of the building block base (2) above and is visible through the perforation (21).