In the cavity of a repetition rate Q-switched YAG laser, the stable internal optical parametric oscillator (IOPO) and the internal parametric amplifier (IOPA) are realized. The main results are as follows: the threshold of IOPO is smaller than 20 mJ, the maximum output energy is 35.9 mJ, the corresponding conversion efficient is 45%, and the peak output wavelength is 1570 nm. The solid-state instrument is compact and easy to miniaturize.