Book excerpt: In this paper, a description of research advance on the growth of some important uv nonlinear optical crystals, such as BBO LBO and KBBF etc., which were first invented and developed by our institute during the past decade is given. The review consists of the following contents: the choice of method for the crystal growth; the technique of the crystal growth and the development; the choice of the flux; the effects of the solution structure and other growth conditions on the crystal growth; the metastable growth of BBO crystals and BBO crystal growth from the pure melt by a direct CZ method; the habit and defect of the crystal and other important problems in the crystal growth.