I have applied for a patent application number, found that other people produce my products, can I sue him for infringement?

At present, you can't sue him for infringement because your patent is not yet authorized. But you can send him a lawyer's letter, let him stop production or sales, to be authorized by your patent, if he is still in production or sales, then you can sue him for infringement and demand compensation. Note: In you want to sue him before you need to determine: 1, whether his product infringes on your patent, whether the technical characteristics of the full fall into your claims 2, whether your patent rights are stable, the other side may not be able to invalidate your patent. 3, if you collect evidence of infringement of the other side, is directly related to the amount of compensation.