A pool with an elliptical frame is disclosed. The pool includes a support frame (A) and a flexible pool liner (B) which is supported by the support frame (A) and is used for containing water. The support frame (A) includes a horizontal and substantially elliptical upper frame (1). A plurality of vertical support members (2) and oblique support members (3) are used for supporting the upper frame (1). Two opposite ends of the upper frame (1) are arranged two opposite arcuate frames (11) along the major axis direction of the elliptical upper frame. Two opposite parallel straight frames (12) having the same length are respectively coupled between the two arcuate frames (11). The arcuate frames (11) and the straight frames (12) form the closed upper frame (1). The wall-mounted filtration apparatus is arranged on the pool using the connecting threads (710) positioned on the water outlet (128) of the pool.