3dmax can't see the object at close range with the camera, it seems to be cut, and sometimes even invisible. Is there any way to solve it? Please advise!

Case 1: The object properties are invisible to the camera, and the picture looks different.

In case 2, camera cutting, you can set the "manual cutting" command on the camera panel where the object is visible, and adjust the values of "near cutting" and "far cutting" under it, which is equivalent to cutting off the part that blocks the camera.

The last one is the problem of your software version or machine graphics card. Try again after rendering. You have to eliminate the problem step by step, and you are not sure what the problem is. I hope it helps you.