The invention discloses a 
system capable of providing appropriate 
aerobic exercise amount for a user. The 
system comprises a 
central processing unit, a 
heart rate detecting band, an exercise action 
library, an exercise detecting module, an exercise guiding module, an exercise self-assessment module and steps, wherein the 
heart rate detecting band, the exercise action 
library, the exercise detecting module, the exercise guiding module and the exercise self-assessment module are connected with the 
central processing unit. The 
resting heart rate of the user is detected according to the heart ratedetecting band to determine an exercise 
target heart rate interval, and thus the safe 
exercise time within a period is obtained; the current 
exercise time is determined by detecting the immediate 
heart rate in the exercise process of the user; accordingly the residual 
aerobic exercise amount of the user in the period is calculated according to the safe 
exercise time. The user can obtain healthierexercise guidance through real-
time exercise monitoring, analysis and feedback, the phenomenon is avoided that blind exercise causes poor exercise effect or improper exercise harms the body, the usercan adjust 
aerobic exercise suitable for him / her according to his / her 
exercise intensity and time, exercise can be more scientific and targeted, and the purpose of scientific exercise is achieved.