laim 0 of the present invention, there is provided a laser control apparatus which controls a power of a semiconductor laser in an optical recording/reproducing apparatus for performing recording/reproduction into/from an optical recording medium by a semiconductor laser, comprising: a semiconductor laser power monitor means for monitoring an output of the semiconductor laser; an output error detection means for detecting an error between an output power reference value to be outputted by the semiconductor laser at reproduction just before recording and an actual output power value at the reproduction, which value is detected by the semiconductor laser power monitor means; a semiconductor laser power control means for setting an output power target value to a semiconductor laser driving means on the basis of 