An environmental friendly animal excrement collector includes: a supporting base including a first pad and a plurality of first magnetic tablets, the first pad being formed with a plurality of spaced apart first retaining holes that are distributed along the length of the first pad, each of the first magnetic tablets being received in a respective one of the first retaining holes; and a collecting device including a second pad, a plurality of second magnetic tablets, and a flexible collecting bag connected to the second pad. The second pad is formed with a plurality of second retaining holes. Each of the second magnetic tablets is received in a respective one of the second retaining holes and is attracted magnetically to a respective one of the first magnetic tablets.