Hey! This is very good overall, and your ideas are expressed well. As you can see, I made some small grammar corrections that will make your entry more fluid. You can also use other words instead of those that I've chosen to include, but I made the corrections that made the most sense to me. You're a great writer!

Nowadays, the learning pressures on children are more heavy than before. Pupils always spend a long time to study studying not only in school but also after class. Personally, I do not agree that way for children's study in children studying that way. Overwhelming force may do harm to one's mental growth and personality; for this reason, the government, education institution and parents ought to work together finding to find a way reasonable for children's education. 
Considering personality development, long hours are used in studying by children can take a heavy pressure to make them depressed (this sentence doesn't make sense).Children are onin the period of mental growth, and heavy pressure may be a negative factor. For example, in recent years, the rate of juvenile deliquence becomes has risen higher than before, and one of the most important reasons is the heavy pressure. 
Likewise, long hours are spent for studying on during and after school left leaves less time for children to play and communicate with others. So that too blocks the cultivation of self abilities such as communicative competence international skills, hands-on skills and person's reaction capability. The lack of self abilities can take cause a long time term impact on one's growth. More and more students who have graduated from good universityuniversities are having a hard to finding decent jobs, highly educated and low capacity can be an example to explain the opinion above (rephrase this statement- I understand what you are trying to say, but it doesn't make sense as written). In another On the other hand, little free time to play and do exercises could also lead to weak bodies. 
As Because children are the future and hope of this country, the government has responsibility to set up legals laws making the educational system more perfect. Meanwhile, schools need to think a lot of about student's psychology besides in addition to textbook knowledge to make for the pupils' all-around development. As for parents, they should pay more attention to give kids longer free time for playing and communicating with others. 
In To summarize, I have never denyed the importance of studying. But in my opinions, "studying" includes various parts of things not only for learning of schoolworks.