A biochemical ball includes a first half, a second half, and a plurality of sponge filters. The first half has a plurality of first ribs, a first rim, and a first partition. The first partition divides the first half into a plurality of equal first accommodating spaces. The first rim of the first half is provided with a first fastener and a connecting joint. The second half has a plurality of second ribs, a second rim, and a second partition. The second partition divides the second half into a plurality of equal second accommodating spaces. The second rim of the second half is provided with a second fastener configured to correspondingly engage with the first fastener. The sponge filters are so received in the first and second accommodating spaces that the sponge filters are separated without contacting each other, thereby enhancing filtering efficiency.本創作係關於一種生化球構造 ，係於一第一本體設有複數第一肋條及一第一圓環部，該第一本體設有一第一分隔條，將該第一本體區隔成複數等分之第一容置空間，又該第一本體之第一圓環部上分別設有一扣合塊及一連結端；一第二本體設有複數第二肋條及一第二圓環部，該第二本體設有一第二分隔條，將該第二本體區隔成有複數等分之第二容置空間，又該第二本體之第二圓環部上設有與該扣合塊相對應扣合之一扣合孔；複數過濾棉塊置入於第一容置空間及一第二容置空間內，以使每一塊過濾棉塊之間並不相鄰接觸；藉以可提高過濾效能。
