On some websites, it says 252hp and 4def for Pokemon stats. What does it mean?

Question

It's for decidueye L80
Mine is
Hp 223
Defence 135
Sp def 181

On the website
Hp 252
Defence 4
Sp def 252
I don't know what to do

Comments

as already answered, these are EVs which we have a page on https://pokemondb.net/ev

Answer 1

This are the suggested EV distribution of the Pokemon. EVs are essentially bonus points for the stats, helping them increase a little more. EVs are received when you defeat a Pokemon; every Pokemon yields different amounts and types of EVs. A Pokemon can achieve a maximum of 252 EVs in one stat and 510 EVs total.

You can read more about EVs here: https://bulbapedia.bulbagarden.net/wiki/Effort_values

Hope I helped. :)

Answer 2

252, 4 and 252 are not the Pokémon stats, they are suggestions as to how you should train your Pokémon. Since yours is already lv 80, it's most likely already received all of its EVs, under normal training. But if you want to battle competitively, you'd need to start from scratch and start EV training.

Well, if you want to EV train your Decidueye, it isn't too late. You can remove all of his EVs with berries and train him again.