How can I set a mesh to the particle?

[WingUNO]

Hi,

I want to make an explode effect by using particle system. And I want to make a model to represent all particles. Unfortunately, they changed to transparent:

The box I attached to the Mesh should be like this :

Why they all changed to transparent ?

Thank you for your time !

[max]

Looks like a Particles Blending is set to Additive instead of Alpha.

[WingUNO]

Thank you, max.

According to you, I set the blending type to Additive.

And it still transparent.

[max]

Set it to Alpha, and then make sure Opacity curve is at maximum.
And make sure your texture doesn’t have alpha channel.