The invention discloses a self adaptive flow control method used for the data transmission of wireless video supervisory system, which comprises following steps, (1) initializing the video compression chip;(2)activating data frame protecting thread, and estimating the situation of physical channels according to the overflow condition of buffer area so as to adjust the frame loss value; (3)activating users terminal feedback information receiving process thread and monitoring and receiving the network situation information sent back from the user terminal so as to adjust the frame loss value; (4) activating self adaptive flow control thread, and adjusting the terminal object code rate in a self adaptive way according to the frame loss value in a certain period; (5) activating the sending thread. Through the detection of the buffer utilization factor of a control chip on the monitoring terminal and the packet loss information feedback generated in network transmission of user terminal, the invention can calculate the frame loss value, measure the necessity of code rate changes and adjusting step length of code rate, and choose the biggest data transmission speed in a self adaptive way so as to get the best video quality.