A total of 16 concrete independent foundation slabs with different widthtoheight ratios and hypotenuse slopes were tested under uplift load, and the failure modes and uplift bearing capacities of this type of foundation slab were studied. Based on the test results, the effects of widthtoheight ratio and hypotenuse slope on uplift bearing capacity of foundation slab were also analyzed and compared. The experimental results showed that, the uplift bearing capacity decreases obviously with the increase of hypotenuse slope when the widthtoheight ratio, the size of slab and steel reinforcement are the same. In addition, the results also showed that when the hypotenuse slope and the size of slab are same, the uplift bearing capacity of foundation slab is gradually reduced with the increase of widthtoheight ratio. The results of this study can provide experimental basis for the concrete independent foundation slab in proposing the design method of uplift capacity.