一、什么是诈骗累犯？
诈骗累犯，是指依照刑法规定，被判处有期徒刑或者无期徒刑的前科人员。一般而言，被判处有期徒刑以上或者无期徒刑的犯罪人，均为诈骗累犯。
二、诈骗累犯立案的条件
根据《中华人民共和国刑法》规定，诈骗累犯被立案的情况分为两种：
1. 犯罪行为严重：若某人曾被判处有期徒刑三年以上或者无期徒刑，并且又犯有诈骗罪的行为，此时可以对其进行立案。
2. 犯罪行为次数多：在一定时期内，被定罪诈骗犯罪次数达到三次以上，或者被定罪抢劫、抢夺、抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢夺抢