There are many methods, such as rubbing Shenshu point and Mingmen point on the back after heating with both hands. You can also rub Guanyuan and Qihai points in the lower abdomen, and you can also rub Yongquan points on the soles of your feet. There are also knocking teeth, singing drums and so on. However, these methods are slow to take effect and need perseverance. If you have symptoms of kidney deficiency, then you should find the reason and treat it symptomatically. The above methods can be used as auxiliary means. Want to know the specific operation of the above methods, you can Baidu.