Sound amplification device in playground

The utility model relates to the field of sound amplification technology, in particular to a sound amplification device in a playground, which comprises a sound amplification sound box, a mounting seat and a support, the sound amplification sound box is movably connected with the mounting seat, the sound amplification sound box is connected with a power supply, the mounting seat is slidably connected with the support, and the support is connected with the mounting seat. The sound amplifying device further comprises a height adjusting assembly, an angle adjusting assembly and a control assembly, the height adjusting assembly is used for adjusting the height between the sound amplifying device and the ground, and the angle adjusting assembly is used for adjusting the orientation of the sound amplifying device. The height adjusting assembly and the angle adjusting assembly are both in communication connection with the control assembly, and the control assembly is used for controlling opening and closing of the h