many small bumps are appear and sometimes itching and discomfort and look weird how to cure this! tell me
What you have in the main is simply natural development of your penis.
However, the quality or rather, healthiness of your penile skin looks quite poor - you must try to restrict exposure to soap and other forms of body wash such as shower gel.
Try to clean your genitals with water in the main, never use hot water - make sure you fully dry after washing your penis or having had a shower.
Many men find it beneficial for their penile skin to use liquid coconut oil regularly, such as after each time you take a shower - all that is required is a very light coating on the main shaft of your penis.
If you have any sexual experience of unprotected penetrative sex or you have received oral it may be an idea to get tested anyway, although you do NOT have any particular visual symptoms