I own a small business. I have vendors that rent booth spaces. I run all sales through my register and bank. I then pay them for their items that sold every 2 weeks. Do I need to give them a 1099 misc. form showing the amount that i payed to them for

It depends how much you paid them. If you paid at least $600, yes you must issue a 1099-Misc. The fact that you took in the gross amount on the product and then gave it to them would indicate that this would be part of their compensation.

Here is a further list from the IRS:

Form 1099-MISC, Miscellaneous Income

File this form for each person you paid during the year:

1.  at least $10 in royalties or broker payments in lieu of dividends or tax-exempt interest;
2. at least $600 in:

• rents
• services performed by someone who is not your employee;
• prizes and awards;
• other income payments;
• medical and health care payments;
• crop insurance proceeds;
• cash payments for fish (or other aquatic life) you purchase from anyone engaged in the trade or business of catching fish;
• generally, the cash paid from a notional principal contract to an individual, partnership, or estate;
• payments to an attorney; or
• any fishing boat proceeds,

From <https://www.irs.gov/uac/about-form-1099misc>