The invention relates to an anti-splashing water tank for 50 beam tube production equipment. The anti-splashing water tank comprises a funnel, a baffle and a tank body. The rear end of the funnel is connected with the tank body. The vertical baffle is arranged at the joint of the tank body and the funnel. A through hole allowing a beam tube to penetrate is formed in the center of the baffle. An anti-splashing device is mounted in the funnel and comprises a support, a stainless steel net and a soft sponge mat. The support is mounted in the funnel. The stainless steel net is mounted on the upper portion of the support. The soft sponge mat is mounted on the lower portion of the support. The soft sponge mat is located below the stainless steel net, and a clearance exists between the soft sponge mat and the stainless steel net. The anti-splashing water tank is low in improvement cost, and operation is simple and easy to understand; the situation that spray splashes to fly onto the surface of the beam tube to form bumps can be effectively avoided, and accidents of the bumps of the beam tube are reduced to the maximum extent; and product quality and production efficiency are greatly improved.