The invention discloses a thin paper certificate placing machine. The thin paper certificate placing machine comprises a position-adjustable support leg frame mechanism, a bracket mechanism, an angle-adjustable cover plate mechanism, a weight backup plate mechanism, a storage tank mechanism, an upper backup needle mechanism and a certificate taking and placing mechanism; the bracket mechanism, the angle-adjustable cover plate mechanism, the weight backup plate mechanism, the storage tank mechanism, the upper backup needle mechanism and the certificate taking and placing mechanism are respectively mounted on the position-adjustable support leg frame mechanism; the angle-adjustable cover plate mechanism is connected with the bracket mechanism; the weight backup plate mechanism is mounted on the angle-adjustable cover plate mechanism; and the upper backup needle mechanism and the certificate taking and placing mechanism are respectively connected to the storage tank mechanism. The thin paper certificate placing machine realizes stable paging and precise feeding number, and is suitable for urgent needs of large-scale production.