QIAN Da-xin’s Shijiazhai Yangxinlu has always been highly respected. It has been even regarded by modern scholars as the best among the Qing academic biji (a type of literature consisting mainly of short sketches). However, nobody has written commentaries on this remarkable work in spite of quite a number of collations. Trying to fill in the gap, this paper makes commentaries on this book. The commentaries consist in seven categories as follows: (1) tracing back to the provenance, that is, to find out the sources of QIAN’s views; (2) rectifying the faults, that is, to correct his errors wherever detected; (3) filling in the deficiencies, that is, to make complete his explanations which are insufficient; (4) solving the puzzles, that is, to expound his ideas which may cause doubt; (5) elaborating on the right, that is, to make clear that for which his views are correct while his opponents’ are not; (6) investigating the raison d’être, that is, to probe into the reason where QIAN only indicates the facts; (7) making a hypothesis, that is, to suggest the grounds wherever he arrives at a certain conclusion with no proof. This serves the preface.