We select a sample including 401 sources in which both absorption and emission redshifts are available from the table 1 inHewitt and Burbidge. The sample is the largest one for the investigation of the quasar redshifts so far. It is found that most of the absorption redshifts(93.6%) are smaller than the corresponding emission redshifts, and the result is consistent with the conclusion drawn from a small sample in 1970s. The result indicates that the redshifts of quasars are indeed distance indicators. That is consistent with the cosmological interpretation of quasar redshifts.
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