By utilizing the master oscillator power amplifier configuration which includes a continuous-wave single-frequency 1064 nm seed laser and four-stage Nd∶YVO4 amplifier, a continuous-wave single-frequency 1064 nm laser is realized experiment ally. When the pump power is 220.00 W, the highest output power reaches 103.80 W and the total optical-optical efficiency of the amplified laser is 33.2%. When the output power of the amplified laser is 97.73 W, the long-term power stability within five hours is better than ±0.53% and the beam quality factor M2 is less than 1.38. The intensity noise reaches the quantum noise limit of 4.3 MHz.